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Doctoral degree requirements, general philosophy of the ph.d.  program.

Biology is the most diverse of all the disciplines in the natural sciences. Consequently, the allied fields to which the various subdisciplines in Biology share natural affinities differ. For example, molecular biology makes connections with physical chemistry, biomechanics with engineering and physics, and ecology and evolutionary biology with statistics, mathematics, geology, and atmospheric sciences. The goal of the Biology Doctoral Program is to train young scientists who:

  • excel at research and teaching in their own subdisciplines;
  • demonstrate competence in fields allied to their subdisciplines; and
  • display a breadth of knowledge in Biology as a whole. 

Trajectory through the program

  • At the beginning of your Ph.D.: you will be assigned a temporary advisor (typically the sponsor of your admission).
  • Before registering for the first semester: discuss with your advisor which courses you should take. As a first-year student, you are encouraged to interact with other faculty in your research area to ask them about courses you should take before the preliminary exam—these faculty may very well become members of your Ph.D. committee.

The philosophy of the department is that you need not spend a great deal of time in coursework.  You should take only the courses that fill gaps in areas that will be needed in your research, and spend most of your time starting your research.

  • During the first three semesters: take up to three tutorials with different faculty members in the department. The tutorial requirement is waived as soon as you declare an advisor. Tutorials may involve laboratory work, directed reading in the primary literature, greenhouse or field studies, mathematical or computer modeling, or any other activity that would assist you in identifying a suitable dissertation topic. Other goals of the tutorials are to expose students to the diversity of faculty research interests in their specialty and to help them to identify an appropriate advisor and dissertation committee. 
  • By the end of the 3 rd semester, you must choose an advisor and the advisor must convene an initial meeting of the dissertation committee. Dissertation committees will consist of at least four faculty members, one of which will represent your minor (see below). The goals of the initial meeting are to assess the novelty and feasibility of your proposed dissertation topic, to ascertain whether you need to take any additional courses to demonstrate preparedness for the preliminary exam, and to decide the format of the written dissertation proposal (see below).  If you fail to meet with your committee before the end of the 3rd semester, the Director of Graduate Studies (DGS) will notify you in writing, and will discuss with you and your advisor ways to resolve any difficulties. 
  • Preferably by the end of the 4 th semester, but certainly by the end of the 6 th semester, you must pass an oral preliminary examination to establish candidacy for the Ph.D. One week prior to the exam, you must present a written essay describing your proposed dissertation research to your committee. The exam itself will cover the specific research areas addressed in your proposal, but will also test your depth of knowledge in your area of specialty and your breadth of knowledge in Biology as a whole.
  • When the dissertation research is completed, you will present the written dissertation to your committee two weeks prior to the dissertation defense (the dissertation also has to be submitted to the Grad School two weeks before the defense). You are also required to present your results in a seminar. You are expected to complete the degree requirements as soon as possible, but students making progress toward their degree will be considered to be in good standing through the 12 th semester. 

You are required to declare a minor at the time of the initial meeting with your dissertation committee. At least one member of the dissertation committee must represent the minor field, and will be charged with assessing your knowledge in the minor during the preliminary exam.  The goal of the minor is to ensure that you acquire a breadth of knowledge beyond your immediate specialty, either in a different area of Biology or in an allied field. Dissertation committees have the freedom to determine the specific nature of the minor, to tailor it to your needs, but minors are subject to approval by the Director of Graduate Studies and the Graduate Affairs Committee.

The minor may:

  • lie entirely outside Biology (e.g., Statistics, Mathematics, Computer Science, Chemistry, Engineering, Atmospheric Sciences, Geology);
  • require the student to acquire knowledge about a group of organisms that differs from those on which the student’s dissertation research focuses; or
  • represent a biological subdiscipline that is distinct from the student’s own subdiscipline.  For example, a student whose advisor is in the Evolution, Ecology, and Organismal Biology sub-department might choose Developmental, Cellular, and Molecular Biology (DCMB) as a minor, with appropriate representation by a DCMB faculty member on the preliminary exam and dissertation committees. A student in ecology might choose evolutionary biology as a minor.

Scholarly productivity

To become recognized as independent scientists and to have an impact on their fields, graduate students must communicate their findings to their colleagues. Therefore, all students are strongly encouraged to begin submitting the results of their research to refereed journals as soon as possible (ideally well before the dissertation is completed). In order to give their committee members an opportunity to comment on them, manuscripts that are intended to be included in the dissertation will be given to all committee members at least two weeks prior to submission. You should submit copies of papers accepted for publication to the Director of Graduate Studies, to be included your file. 

You will be required to serve as a teaching assistant for two semesters. Teaching is not simply a mechanism to provide financial support to graduate students. Rather, it is an integral part of your professional development as both an educator and a researcher.

Annual evaluation of student progress

  • After your 1 st year you will meet with your committee annually.
  • In your 2 nd year, your first committee meeting serves as the annual committee meeting.
  • In your 3 rd year, your Preliminary Exam will serve this purpose if you take it in the Fall.

You MUST have an annual progress meeting with your committee each Fall, UNLESS:

  • you are in your 1 st or 2 nd year;
  • you are in your 3 rd year and are taking your prelim this Fall (not Spring, and not in your 2 nd year); or
  • you are defending your dissertation this year.
  • Prior to November 15, you are expected to present to your committee a written report on the progress made over the previous year, and on any difficulties encountered, as well as a plan for completing the dissertation.
  • Before the end of the final exam period in December, your advisor will then convene a meeting of the committee to discuss the progress report with you.
  • By January 1, your advisor must send a letter to the Director of Graduate Studies summarizing this discussion, providing the committee’s evaluation of your progress, and recommending whether you should receive continued financial support from the department. The progress report you submitted to your committee should be attached to this letter. All faculty members not on your committee will also be able to submit to the Director of Graduate Studies any written commentary on the student’s performance (e.g., as a student or teaching assistant in a course taught by that faculty member).  
  • After January 1, the Director of Graduate Studies, in consultation with the Graduate Affairs Committee as needed, will review the written materials to determine whether you shall be granted departmental support for the following academic year. You will receive a letter from the DGS if any remedial measures need to be taken. Your written progress report, your advisor’s letter to the DGS, any letters from faculty not on your committee, and any letters from the DGS will be placed in your folder as a record of your annual progress and evaluation. 

Committee Meetings, Exams, and Defenses during Summer

Scheduling committee meetings, preliminary exams, and dissertation defenses during the summer is strongly discouraged, because faculty members typically have research or other travel plans that must take precedence during this time. Summer meetings, exams, and defenses can only be scheduled by agreement of all members of the committee. In accordance with Graduate School regulations, such meetings can only be held while the summer semester is actually in session, and the student must be registered for the summer semester.

Note: A downloadable version of the information above is available:

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Application Process

This page details the application process for the graduate program in Biology, including the application timeline, application requirements, and information for international students and students with disabilities.

MIT Graduate Biology is a doctoral program. There is no Masters offered. The average length of time until degree is 5 1/2 to 6 years.

The Biology department also participates in a number of  Interdisciplinary and Joint Degree Programs , including the Molecular and Cellular Neuroscience graduate program, the joint MD/PhD program, the Biophysics Certificate program, and the joint program with the Woods Hole Oceanographic Institution. If you are interested in any these programs, please make sure you explore the different requirements to participate in or apply for these programs.

View Interdisciplinary and Joint Degree Programs

Application timeline

Deadline Date
Online application opens October 1
Application Deadline December 1
Interview invitations sent via email Mid-January
Open House / Interview Dates (by invitation) February 10 – 12, 2024
February 24 – 26, 2024
Admissions decisions sent Following interviews

Application requirements

Application for admission is completed through our online system GradApply . For fullest consideration, it is in your best interest to complete all parts of the application by or before the deadline. Incomplete applications may not be reviewed. A complete application should include:

Academic transcript

With regards to specific prerequisite courses for the Biology Program, basic requirements would include Calculus, one year of college physics, organic chemistry and subjects including general biochemistry, genetics and physical chemistry. However, students may make up some deficiencies over the course of their graduate work.

If you are unable to submit an unofficial transcript before the application deadline, you should complete the “Subjects Taken” page on the online application. You should then submit an official transcript by mail as soon as possible. To be considered official, transcripts must be received in envelopes sealed by the institution.

Mailing Address:

Biology Graduate Program Massachusetts Institute of Technology 77 Massachusetts Avenue Building 68-120 Cambridge, MA 02139-4307

Application fee

Letters of recommendation.

We require three letters of recommendation submitted electronically using the online application system. At least two must be academic recommendations. You are responsible for sending the links to your recommenders, tracking the status of the letters (on the “Letter Status” page under “Evaluations”), and following up as needed.

Your recommendation letters should include details that highlight:

  • Past research experience and/or scientific experience
  • Preparation for graduate school, with an emphasis on biology

Standardized tests

Statement of objectives, things to note .

  • If you are applying to more than one department at MIT, you must submit a separate application for each department.
  • CVs can be included in your online application in the “Test Scores / Experience” section.
  • Wherever possible, use the provided drop-down menu options to ensure that your information is submitted correctly.
  • Email will be the primary method of contacting you. Do not change your email address once you have submitted your application, as this will result in a record mismatch.

In-person interviews

In-person interviews are required for an offer of admission to the Biology program. Invitations will be sent out to selected applicants by email in mid-January along with further details about the interview process. The program will cover interview travel expenses, or provide cost-sharing for international students.

Information for international applicants

  • We cannot waive the application fee for international applicants.

Non-native English speakers

Fluency in spoken and written English is essential for success in our program. We judge fluency in several ways, including scores from standardized tests.

  • The IELTS (preferred), TOEFL, Cambridge English Qualifications C1 Advanced, or Cambridge English Qualifications C2 Proficiency test is required of all applicants whose primary language is not English or who did not complete college education in English
  • Test scores: TOEFL (required minimum 600),  IELTS (required minimum 6.5), or Cambridge English Qualifications C1 Advanced/C2 Proficiency (required minimum 176)
  • Test scores must be from within the past two years

More information about these tests is available on the MIT Graduate Admissions website .

Students with disabilities

MIT is committed to equal access for qualified students. Interested students may contact the MIT Student Disabilities Services office  to learn about resources on campus.

Biology Application Assistance Program

The Biology Application Assistance Program (BAAP) is a student-led effort to support MIT Biology applicants and lower the application information gap for applicants from underrepresented or non-traditional backgrounds. If you are a prospective graduate student applying during this application cycle, submit an application to participate in student-led application activities, including office hours and panels with current MIT Biograds, to help you prepare your application before submission. BAAP applications will be accepted on a rolling basis until November 15, 2024. Questions? Email [email protected]  or visit the BAAP website to learn more.

Submit a BAAP Form

Questions and concerns

  • Additional information about the application process is available on the Graduate Admissions website .
  • For specific questions about the Biology Graduate Program and the application process, contact us by email ([email protected]) or phone  (617-258-6502).
  • For technical questions about the online application site, contact [email protected] .

Due to the volume of applications received, we are unable to respond to requests for updated status of application materials received or to provide feedback about unsuccessful applications.

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Doctor of Philosophy (PhD) in Biology

The PhD in Biology is a research degree requiring graduate-level coursework, completion of a dissertation, and two semesters of participation in teaching (usually as a teaching fellow in laboratory or discussion sections of lecture courses led by Biology faculty). For most students, obtaining this degree typically involves five or more years of full-time study.

A summary of Biology PhD student expectations by year can be found here . Full details can be found in the Graduate Program Guide .

The Biology Department guarantees support for five years for all PhD students, contingent on satisfactory performance in the program.

How to Apply    Frequently Asked Questions

Learning Outcomes

1. Demonstrate academic mastery in one of three areas of Biology: Ecology, Behavior & Evolution; Neurobiology; or Cellular & Molecular Biology.

2. Attain research expertise , including grant writing experience, and complete original research that advances a specific field of study within one of three broad subject areas represented in the department: Ecology, Behavior & Evolution; Neurobiology; or Cellular & Molecular Biology.

3. Attain teaching experience and expertise in one of three broad areas of Biology: Ecology, Behavior & Evolution; Neurobiology; or Cellular & Molecular Biology.

4. Attain the skills and qualifications needed for employment in an academic, government, or private sector position related to the life sciences.

Coursework Requirements

Students must complete 64 credits with a minimum grade point average of 3.0; at least 32 of these credits must be accrued from lecture, laboratory, or seminar courses. Students with prior graduate work may be able to transfer course credits.  See the  Graduate School of Arts & Sciences (GRS) Transfer of Credits policy  for more details. 

  • 2 semesters of Progress in Research Seminars (2 credits each):

Cell & Molecular Biology:  BI 583 & BI 584 (CM section)

Ecology, Behavior & Evolution: BI 579 & BI 580

Neurobiology:   BI 583 & BI 584 (NEURO section)

  • 1 semester grant-writing course (2 credits):

Cell & Molecular Biology:  BI 581

Ecology, Behavior & Evolution: BI 671

Neurobiology: BI 581

  • 1 semester pedagogy course (1 credit): All Biology PhD students take  BI 697
  • 1 quantitative course (3–4 credits): from a list of recommended courses .
  • Additional courses vary by specific track below:

Cell & Molecular Biology

1. GRS BI 791/GRS BI 792 Graduate Rotation Credits (2 credits each/4 credits total)

2. GRS BI 753 Advanced Molecular Biology  (4 credits)

3. GRS MB 721 Graduate Biochemistry  (4 credits)

4. GRS BI 735 Advanced Cell Biology  (4 credits)

5. Two electives (8 credits, 500-level and above), see the Graduate Program Guide for recommendations

6. Research credits  (remaining credits)

Ecology, Behavior & Evolution

1. Six electives  (24 credits, 500-level and above), see the Graduate Program Guide for recommendations

2. Research credits  (remaining credits)

Ecology, Behavior & Evolution PhD candidate coursework is highly variable. Students, in consultation with advisors, develop a plan of coursework and research. Students are required to take a minimum of 32 credits of coursework. The remainder of the credits should be research.

Neurobiology

2. GRS BI 755 Cellular and Systems Neuroscience  (4 credits)

3. GRS BI 741 Neural Systems: Functional Circuit Analysis  (4 credits)

4. Four electives  (16 credits, 500-level and above), see the Graduate Program Guide for recommendations

5. Research credits  (remaining credits)

Teaching Requirement

The department requires a minimum of two semesters of teaching as part of the Doctor of Philosophy program. During the first semester of teaching, students are required to enroll in our first-year seminar course, GRS BI 697 A Bridge to Knowledge . The course provides guidance and training on pedagogy and other aspects of graduate school.

Qualifying Examination

The qualifying examination must be completed no later than six semesters after matriculation. In most graduate curricula in the department, this consists of a research proposal—often in the form of a grant application—which the student submits to their committee and subsequently defends in an oral presentation. In the  Cell & Molecular Biology and Ecology, Behavior & Evolution curricula , this is preceded by a comprehensive written examination testing the student’s general background from coursework.

Dissertation & Final Oral Examination

Candidates shall demonstrate their abilities for independent study in a dissertation representing original research or creative scholarship. A prospectus for the dissertation must be completed and approved by the readers, the Director of Graduate Studies, and the Biology Department Chair. Candidates must undergo a final oral examination in which they defend their dissertation as a valuable contribution to knowledge in their field and demonstrate a mastery of their field of specialization in relation to their dissertation. All portions of the dissertation and final oral examination must be completed as outlined in the  GRS General Requirements for the Doctor of Philosophy Degree . The results of the dissertation must be presented at a department colloquium.

Graduation Timeline

Forms and additional information about PhD graduation can be found on the GRS website .

9 – 12 months before proposed graduation date

  • Dissertation Prospectus & approval form due to Graduate Program Specialist for departmental review and submission to GRS

Semester prior to your intended graduation cycle

  • Intent to Graduate Form completed online

About 2 months before dissertation defense

  • Meet with Graduate Program Specialist, Director of Graduate Studies, and Faculty Advisor to review requirements for defense
  • Arrange for Special Service Appointments if committee members are not BU faculty
  • Send first draft of dissertation to readers

Once defense date is confirmed with committee

  • Reserve room(s) for public seminar and defense

At least three weeks prior to dissertation defense

  • Schedule of Final Oral Exam with Abstract Approval due to GRS
  • Properly formatted draft of dissertation submitted as PDF to [email protected]

At least two weeks prior to dissertation defense

  • Send dissertation to all committee members

At least one week prior to dissertation defense

  • Send program information to Graduate Program Specialist

See the Graduate Program Guide for final dates to submit dissertation to ETD

  • Submit final dissertation to ETD (online submission)
  • Complete electronic signature page and forward confirmation to Graduate Program Specialist along with a copy of your submitted dissertation

MS Degree (En Route to PhD)

Option one: A PhD student who has advanced to candidacy (as demonstrated by passing the PhD qualifying exam), and has completed 32 credits of graduate-level coursework (not including research) may apply to the Graduate School for an MS degree in Biology. This must be approved by the Director of Graduate Studies within the Biology Department. The student’s major professor will receive notification of this application process.

Option two: A PhD student who has taken, but has not advanced to candidacy based on the PhD qualifying examination, may still receive an MS degree. This student may receive a Coursework MS degree provided they have completed 32 credits of coursework (not including research credits). Alternatively, this student may receive a Scholarly Paper or Research Thesis MS degree if the written portion of the qualifying examination is adapted to ensure it is of sufficiently high quality for a MS degree, and approved by a majority of the qualifying exam committee and the Director of Graduate Studies.

Interdisciplinary Study Options

Biology PhD students have the option to participate in the Boston University Graduate Program in Urban Biogeoscience and Environmental Health (BU URBAN), the National Science Foundation Research Traineeship Program Understanding the Brain: Neurophotonics (NSF NRT UtB: Neurophotonics), and the Biogeoscience Advanced Graduate Certificate Program . These programs require separate applications in addition to the standard Biology PhD application; those interested in BU URBAN are encouraged pre-apply .

Time Limits

Officially, the PhD must be completed within seven years after the first registration for doctoral study. PhD degrees are conferred in either May, August, or January, as specified on the GRS website . In addition, the PhD candidacy expires after the fifth anniversary of passing the Qualifying Examination. Petitions to extend this deadline are possible at the discretion of the Director of Graduate Studies, the Department Chair, and the Dean of the Graduate School, and can be obtained from the Office of the Graduate School of Arts & Sciences.

The Biology Department guarantees support for five years for all PhD students, contingent on satisfactory performance in the program. PhD students are encouraged to apply for fellowships and grants at funding agencies. All domestic students should apply for NSF Graduate Research Fellowships in the Fall semester of their first or second year. 

Travel Grants may be available to assist students in their travel to professional scientific meetings; students presenting papers or posters on their research will receive first consideration.

Common Types of Funding:

Dean’s Fellowships: These are non-service fellowships allocated to first-year PhD students that do not have immediate teaching requirements.

Teaching Fellowships: These provide a stipend plus full tuition and fees for up to four full courses per semester plus a 2-credit teaching course. Teaching responsibilities usually require approximately 20 hours per week. Full or partial awards may be given.

Doctoral Research Fellowships: These awards are given to students who assist individual faculty with specific areas of research. These Research Fellowships provide a stipend and full tuition. The supervising faculty member determines the specific duties of the Research Fellow.

In addition to the above funding sources, several competitive Department awards and fellowships are available to graduate students in the Department of Biology.

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Students taking soil sampes

About the Program

Make an impact as an expert in your field with a PhD in Biology from Case Western Reserve University, one of the top research universities in the U.S. Our rigorous curriculum and research opportunities will prepare you to work at high-profile universities, in industry, at government agencies, or in renowned medical institutions, including Cleveland Clinic or University Hospitals. No matter where your career takes you, our network of more than 110,000 alumni will have your back as you critically identify and analyze biological problems. Plus, with full tuition coverage, a competitive 12-month stipend through a research or teaching assistantship, and a medical plan, all you have to focus on is completing your program.

Student Resources

Whether you’re looking for information about education abroad opportunities, have questions about visas, or are interested in international opportunities on campus, these quicklinks will help you quickly navigate some of the key resources our website offers for students.

What to Expect

Here, you’ll join a group of students with diverse goals and research pursuits. Our faculty teach a wide variety of courses, but they specialize in neuromechanical systems, ecological consequences of environmental change, and cell and developmental biology. You’ll benefit from their expertise in classes such as ecophysiology of global change, functional genomics, and ecology and evolution of infectious diseases.

You’ll work closely with our supportive faculty to meet your research goals, and ultimately defend your dissertation.

The average time to graduation is six years, during which time you can publish your research as you make strides toward your career. For example, our faculty and PhD students publish their research in influential journals, including Science , Development , PLoS Biology , Ecology Letters , Proceedings of the Royal Society , and Current Biology .

Our biology faculty serve on editorial boards of more than 15 prestigious journals, including Cell Transplantation , Journal of Applied Ecology , Oxford Bibliographies , and others. 

Many of our PhD students conduct research at the Biology Research Station at the Squire Valleevue Farm which features over 400 acres of diverse natural habitat, a research greenhouse, experimental ponds, growth chambers, and modern lab and classroom spaces.

Request Information

Beyond the classroom.

Because of the abundance of incredible organizations in Cleveland, we created the BioScience Alliance . Researchers at CWRU, Cleveland Metroparks Zoo, Cleveland Museum of Natural History and Holden Arboretum make up this powerhouse group that conducts research and training programs in biology. Having organizations such as these right in your backyard—and taking advantage of the opportunities they offer—can lead to full-time employment after graduation, just as it has for many of our graduates.

We also have a new learning and research space for you to explore: Bio[box] . Here, you’ll have access to cutting-edge tools and, with the help of faculty and fellow students, you’ll produce groundbreaking research results.

By the Numbers

tuition coverage through teaching and research assistantships

university in the nation, U.S. News & World Report

for contributions to innovation, Nature Index Innovation

students in the program

years to complete, on average

Students working in a lab

Admission Requirements

Our program thrives when we have students with diverse perspectives and a range of educational, professional and life experiences. We look forward to learning more about you!

The application process requires:

  • Online application , including a personal statement that identifies three potential faculty advisors who would be a good fit for you
  • $50 application fee
  • Bachelor’s degree from an accredited institution, preferably in one of the science disciplines (either already complete, or will be complete before you enroll)
  • Unofficial transcripts
  • Current resume/CV
  • Three letters of recommendation
  • Test scores for GRE (optional)
  • International applicants: Results of TOEFL or IELTS  

Quick Links

Ying-Bei Eldridge Student Services Specialist, Department of Biology College of Arts and Sciences Telephone 216.368.3556 Email [email protected]

PhD in Biology

PhD candidate standing in tea field

The PhD program in Biology is a research-intensive program that also has a strong focus on teaching, designed to produce top scientists and educators with a broad base of knowledge to tackle the most important biological problems of today. This is accomplished through research training, graduate-level courses, seminars, and teaching experience. Entering students are assigned an advisory committee of three faculty members who work with the student to plan a suitable program based on the student's experience and interests.

PhD students in Biology receive full tuition support for six years, a competitive stipend, health coverage, and receive extensive training in pedagogy, outreach, and communication that prepares them for careers in academia, biotechnology, education, and policy. Students are required to serve as teaching assistants for at least two semesters. Most students complete the requirement for teaching experience in the first year by assisting in the introductory undergraduate biology courses for two semesters.

During the first year, students become familiar with research opportunities in the department by doing short research rotations with various faculty members. This experience in expected to lead to the selection of a research focus for the PhD thesis, and it also sets the stage for cross-disciplinary approaches to the thesis topic that is pursued.

First- and second-year students usually take some graduate courses that are selected in consultation with the advisory committee, in addition to one required course: either Biology 243: Topics in Molecular and Cell Biology; Biology 244: Topics in Evolutionary Ecology; or Biology 246: Topics in Physiology and Animal Behavior.

The department faculty are educators as well as researchers, and the graduate students benefit from this expertise. Graduate students serving as teaching assistants have the opportunity to take a course on teaching and pedagogy to improve their skills, or to become involved with upper level courses in their area of expertise. In addition, we offer a one-month summer program for PhD students interested in contributing to course design and honing their teaching skills via GIFT, the Graduate Institute For Teaching .

PhD student working in lab

Research Concentrations

Browse the six concentration areas below for recommended programs of study and relevant courses:

  • Biology Education Research
  • Ecology, Behavior and Evolution
  • Global Change Biology
  • Genetics and Molecular Biology
  • Developmental Biology
  • Physiology, Neurobiology and Animal Behavior

Graduate credit for a course requires a grade of B- (B minus) or better. A list of biology department undergraduate and graduate courses can be found by selecting the Courses button from the top bar.

Throughout the year, graduate students benefit from a variety of seminars on current research that are presented by faculty, fellow graduate students, and invited speakers.

Information and Forms

There are two tracks within the Biology Ph.D. program:

  • Cell, Molecular and Organismal Biology
  • Ecology and Evolution

(Previously a part of the Department of Biology Hopkins Marine Station is now a part of the Oceans Department within  Stanford Doerr School of Sustainability )

Some requirements are the same across concentrations, and other requirements are concentration-specific. Please review the Ph.D. Handbook for specific details.

General Information and Forms

  • Graduate Academic Policies and Procedures
  • 2023-2024 Biology PhD Handbook
  • CMOB Elective Course List 
  • Registrar's Office Forms  (SUNet ID login required)

Teaching Assistant Evaluations (All years)

  • TA Pre-Course Meeting Form  - Due within the first two weeks of starting each TA position
  • TA Evaluation Form  - Due after each TA position

Special Circumstance Forms

  • Graduation Extension Petition  (if applicable)
  • Change of Advisor or Reading Committee Member Form  (if applicable)

First Year Forms

Forms for all first year students.

  • Lab Rotation Evaulation  - Due after each rotation, if applicable
  • NSF Application  - If eligible, Due October 18 (Life Sciences) or October 22 (Geosciences)
  • Dissertation Lab Decision - Due May 1
  • First Year Evaluation and Planning Form  - Due May 1
  • IDP Meeting  - Due August 1

Additional Forms for EcoEvo & Hopkins Students

  • First Year Advising Committee Form  - Due within the first 2 weeks of Autumn, Winter, and Spring quarters
  • Seminar/Talk Evaluation Form  - Due June 1
  • First Year Paper Evaluation Form  - Due June 1

Second Year Forms

In second year you will complete the qualification exam (forms below) then advance to candidacy (forms at bottom),  forms for cmob students.

  • 2nd Year Qualifying Exam Evaluation Form

 Forms for Eco/Evo Students

  • Dissertation Proposal Paper - Due May 15 (electronic Submission)
  • 2nd Year Qualifying Exam Evaluation Form -

 Forms for Hopkins Students

Forms for all second year students.

  • Application for Candidacy  
  • Dissertation Reading Committee Form  
  • Non-AC Committee Member Form  (if applicable)

Third Year Forms

Forms for all third year students.

  • Committee Meeting Form  (annual)

Additional Forms for CMOB Students

  • Seminar Evaluation Form  

Fourth Year Forms

Forms for all fourth year students.

  • Request for TGR Status Form  - Due March 15 (after completion of 135 units and all of the first through third year requirements)
  • Committee Meeting Form (Annual)

Fifth & Sixth Year Forms

Forms for all fifth and sixth year students.

  • Committee Meeting Form  (Semi-annual)
  • Committee Meeting Form  (Semi-annual)
  • IDP Meeting  - August 1

Dissertation Defense & Submission

Dissertation deadlines.

  • Draft of Dissertation - Send to committee 30 days before defense
  • University Oral Exam Form found here - Due 2 weeks before defense
  • Directions for Preparing and Submitting the Dissertation  -  Check due dates for each quarter

Archived Ph.D. Handbooks:

  • .   2020-21
  • 2018-19 

FellowshipBard

Phd in biology: requirements, salary, jobs, & career growth, what is phd in biology.

A PhD in Biology is a doctoral degree that focuses on the study of living creatures and how they interact with their surroundings. It is a four to six-year advanced academic degree that entails hard study and coursework in numerous fields of biology such as genetics, ecology, biochemistry, molecular biology, and physiology.

Students engage closely with faculty members throughout the program to undertake original research in their subject of interest, culminating in a dissertation that explains their results and adds to the field of biology.

PhD biology graduates are equipped for positions in academia, research, business, government, and other professions requiring biological scientific competence.

How much money do people make with a PhD in Biology?

The median annual wage for biochemists and biophysicists (which normally require a PhD in Biology or a related subject) is $98,940, according to data from the United States Bureau of Labor Statistics. Microbiologists made $79,590 per year on average, whereas zoologists and animal biologists made $67,760. Here’s a table summarizing the salary ranges for various career paths for individuals with a PhD in Biology:

University Professor $60,000 – $100,000+
Research Scientist (Academia/Research Inst.) $60,000 – $100,000+
Research Scientist (Biotechnology) $70,000 – $120,000+
Research Scientist (Pharmaceuticals) $80,000 – $150,000+
EPA/NIH Research Scientist $60,000 – $100,000+
Clinical Research $70,000 – $120,000+
Genetic Counseling $70,000 – $100,000+
Science Writer/Journalist $50,000 – $100,000+
Science Education (University Level) $60,000 – $100,000+ (Assistant Prof.)
Conservation Researcher $50,000 – $90,000+
Public Health Researcher $60,000 – $100,000+

What is expected job growth with PhD in Biology?

According to the U.S. Bureau of Labor Statistics, employment of biochemists and biophysicists is expected to expand 6% between 2020 and 2030, faster than the average for all occupations. Microbiologists, zoologists, and wildlife biologists are expected to gain 3% and 4%, respectively, throughout the same time period.

University Professor 9%
Genetic Counseling 21%
Research Scientist (Biotechnology) 7%
Research Scientist (Pharmaceuticals) 6%
Clinical Research 6%
Science Writer/Journalist -4%
Science Education (University Level) 9%
Conservation Researcher 5%
Public Health Researcher 5%

Looking For Fully Funded PhD in Biology? Click Here

What can you do with a PhD in Biology?

A PhD in Biology can lead to a variety of employment options in academia, research, industry, government, and other disciplines. Here are some common career paths for people with a PhD in Biology:

1. Academic research: Many PhD holders go on to work as academic researchers at universities, research institutions, or government agencies. They may perform research in genetics, ecology, biochemistry, molecular biology, and physiology, among other fields.

2. Biotechnology: Biotechnology firms frequently engage PhDs in Biology to perform research and development of new products and technologies such as medications, vaccines, and genetically modified organisms.

3. Medical research: Pharmaceutical and biotech businesses, as well as government agencies, engage people with a PhD in Biology to undertake medical research, such as discovering new treatments for ailments and analyzing drug effects on the body.

4. Environmental science: Individuals with a PhD in Biology can work in environmental science, studying the interactions of living organisms and their environments, as well as the impact of human activities on ecosystems.

5. Science writing and communication: Many people with a PhD in Biology go into science writing and communication, putting complicated scientific concepts into language that the general public can understand.

6. Science policy: Individuals with a PhD in Biology are frequently hired by government agencies and non-profit organizations to establish and implement science policy, such as legislation and funding priorities for scientific research.

What are the requirements for a PhD in Biology?

The specific requirements for obtaining a PhD in Biology can vary depending on the institution and program, but generally, the following are common requirements:

1. Bachelor’s or Master’s Degree: Applicants to most PhD programs in Biology must have a Bachelor’s degree from a recognized university. Although it is not usually required, certain schools may accept applicants with a Master’s degree in a related discipline.

2. Academic Transcripts: Applicants are usually expected to present certified transcripts of their undergraduate and graduate education, which demonstrate their academic performance and achievement.

3. Statement of Purpose: Applicants are typically expected to provide a personal statement or statement of purpose detailing their research interests, academic ambitions, and reason for pursuing a PhD in Biology.

4. Standardized Test Scores: Applicants to many PhD programs may be required to submit scores from standardized tests such as the Graduate Record Examination (GRE) or other related assessments.

5. Letters of Recommendation: Applicants to PhD programs in Biology are frequently required to provide letters of recommendation from academic or professional sources who may speak to the applicant’s academic talents, research potential, and eligibility for a PhD program.

Looking For Scholarship Programs? Click here

How long does it take to get a phd in biology.

The length of time it takes to obtain a PhD in Biology depends on a variety of factors, including the program, the individual’s level of preparedness, and the nature of the research. A typical PhD program in Biology, on the other hand, takes roughly 4-6 years to finish.

Looking For Fully Funded PhD Programs? Click Here

Do you need a masters in biology to get a phd in biology.

A Master’s degree in Biology is not usually required to pursue a PhD in Biology. Many doctoral programs in Biology accept students immediately after they complete their Bachelor’s degree.

Coursework is usually included in the first few years of these programs to give students with the essential basic knowledge and research abilities before they begin their independent research projects.

Some PhD programs, however, may prefer or require applicants to have a Master’s degree in Biology or a related field prior to applying.

A Master’s degree can give a student more experience and expertise in their field of study, which can be useful while applying for PhD programs or performing research during their doctoral program.

What are the Best PhD in Biology Degree programs?

1. massachusetts institute of technology (mit) 2. stanford university 3. california institute of technology (caltech) 4. harvard university 5. university of california–berkeley 6. johns hopkins university 7. university of california–san francisco 8. princeton university 9. university of chicago 10. yale university, leave a comment cancel reply.

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Phd program, interested in applying this cycle, rsvp for our information session in november .

Graduate students in the Department of Biology at the University of Washington receive a commitment from the entire department to support their education and research.  Our students make excellent use of the many opportunities available to them, as evidenced by the extraordinary number of fellowships and awards received, the successful publication of high impact papers, and their regular contributions at national and international meetings.  Our students receive additional training by participating in departmental governance, curriculum development, faculty recruitment and other activities. Together these factors combine to promote an unusual degree of professionalism and community spirit.

(All numbers are approximations, exact figures differ annually)

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  Our department provides funding for the first five years of your program through a variety of teaching and research assistantships, fellowships, and scholarships.  Students are frequently able to find funding for the duration of their research program through these means as well.

Member of the Team

By joining the Biology Department at the University of Washington, you will become a part of a world-class research institution.  Here, graduate students are treated as colleagues by a committed faculty who work to mentor students, to provide opportunities to develop research interests, to network both on and off campus, and to publish and present their own research.

You will find a collaborative environment at the University of Washington, with faculty engaging in research with the lab next door, researchers across campus, and teams halfway across the world.  Our graduate students are encouraged to collaborate similarly, seeking additional mentors and colleagues throughout the world who compliment their research interests.

Timeline to Completion

 

Begin program, lab rotation #1

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Conduct research and begin writing; work to publish/present research; Supervisory Committee Annual Meeting

Conduct research and continue writing; work to publish/present research; Supervisory Committee Annual meeting

Publish/present a chapter of your dissertation; select Reading Committee

Schedule Final Exam

 

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Ph.D. in Biological Sciences

The mission of the Ph.D. program in Biological Sciences is to train new generations of scientific leaders who make significant and distinctive contributions to society. The department has established a broad range of resources to enable the students to define and achieve their personal mission. With this broad goal in mind, our specific objectives are to mentor students to:

Become contributing, impactful members of their discipline. This requires:

  • Being familiar with literature and history of the field
  • Understanding how the discipline has evolved and where it is headed
  • Identifying novel and important questions
  • Identifying desired personal impact on the field.
  • Mastering approaches and techniques
  • Appreciating the impact of the discipline on a broader community
  • Establishing visible profile in the field

Develop professional skills in :

  • Scientific writing (papers, proposals, traditional and social media)
  • Oral presentation
  • Team management (including interdisciplinary teams)
  • Communication, networking, connecting with community of researchers & science professionals
  • Time management, life/work balance

Establish career development plans through :

  • Establishing sense of scholarly citizenship
  • Knowing the types of careers paths following from Ph.D. training
  • Developing personal career goals
  • Appreciating skills required to achieve career goals and how to align personal training with these goals 

Ph.D. Student Research Videos

Emily simon (linstedt lab), andrew wolff (hinman lab).

  • Online Application

Beril Tutuncuoglu

" CMU provides an innovative environment, where technology meets deep scientific thinking. I received constant guidance both for my research projects and career path. I had the opportunity to explore different areas and expand my imagination about what is possible to discover in biology, by taking selective courses and consulting faculty with a broad range of expertise. Through presenting at international conferences, I established scientific collaborations, which lead to significant findings and publications, one of which is in the highly regarded journal  Nature . A key perk of being a part of the Department of Biological Sciences is the alumni network of CMU, which consists of overachieving and fearless individuals. As a recent hire of a company started by two CMU alumni, I am excited to continue my pursuit of discovering the unknown and challenging the current limits of experimental sciences ."

Santosh Chandrasekaran

" One of the characteristics of CMU that I particularly loved was the extensive levels of collaborations between research groups, even from seemingly unrelated fields. Such exquisite collaborations often further the frontiers of research and being a graduate student at CMU allowed me to lead and be a part of such high quality research. This is primarily due to the excellent faculty at CMU who are always interested in exploring new ideas and are very approachable which gave me immense encouragement  ..... Pittsburgh also provided ample opportunities to pursue my varied hobbies, be it art and music or skiing and rock climbing. This was particularly important for me as it provided a way to switch off from research and rejuvenate. "

Ken Hovis

" As a prospective student in neuroscience, most of the graduate programs I applied to were neuroscience only programs. One of the biggest reasons I am so glad I chose the Biological Sciences graduate program at CMU, is because I not only gained access to excellent training in the field of neuroscience, but I was surrounded by faculty, post-docs, and other graduate students from many other disciplines. This provided me with different perspectives on my research and enabled me to have access to, learn, and incorporate a variety of techniques from different fields during my graduate experience. It also provided me with experience working as part of an interdisciplinary team, which is a very important part of my job now as I work closely with faculty from mathematics, physics, chemistry, and biology. "

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How Long Does It Take to Get a Ph.D. Degree?

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Earning a Ph.D. from a U.S. grad school typically requires nearly six years, federal statistics show.

length of phd biology

(CAIAIMAGE/TOM MERTON/GETTY IMAGES)

A Ph.D. is most appropriate for someone who is a “lifelong learner.” 

Students who have excelled within a specific academic discipline and who have a strong interest in that field may choose to pursue a Ph.D. degree. However, Ph.D. degree-holders urge prospective students to think carefully about whether they truly want or need a doctoral degree, since Ph.D. programs last for multiple years.

According to the Survey of Earned Doctorates, a census of recent research doctorate recipients who earned their degree from U.S. institutions, the median amount of time it took individuals who received their doctorates in 2017 to complete their program was 5.8 years. However, there are many types of programs that typically take longer than six years to complete, such as humanities and arts doctorates, where the median time for individuals to earn their degree was 7.1 years, according to the survey.

Some Ph.D. candidates begin doctoral programs after they have already obtained master’s degrees, which means the time spent in grad school is a combination of the time spent pursuing a master’s and the years invested in a doctorate. In order to receive a Ph.D. degree, a student must produce and successfully defend an original academic dissertation, which must be approved by a dissertation committtee. Writing and defending a dissertation is so difficult that many Ph.D. students drop out of their Ph.D. programs having done most of the work necessary for degree without completing the dissertation component. These Ph.D. program dropouts often use the phrase “ all but dissertation ” or the abbreviation “ABD” on their resumes.

According to a comprehensive study of  Ph.D. completion rates  published by The Council of Graduate Schools in 2008, only 56.6% of people who begin Ph.D. programs earn Ph.D. degrees.

Ian Curtis, a founding partner with H&C Education, an educational and admissions consulting firm, who is pursuing a Ph.D. degree in French at Yale University , says there are several steps involved in the process of obtaining a Ph.D. Students typically need to fulfill course requirements and pass comprehensive exams, Curtis warns. “Once these obligations have been completed, how long it takes you to write your dissertation depends on who you are, how you work, what field you’re in and what other responsibilities you have in life,” he wrote in an email. Though some Ph.D. students can write a dissertation in a single year, that is rare, and the dissertation writing process may last for several years, Curtis says.

[ READ: What Is a Doctorate or a Doctoral Degree?  ]

Curtis adds that the level of support a Ph.D. student receives from an academic advisor or faculty mentor can be a key factor in determining the length of time it takes to complete a Ph.D. program. “Before you decide to enroll at a specific program, you’ll want to meet your future advisor,” Curtis advises. “Also, reach out to his or her current and former students to get a sense of what he or she is like to work with.”

Curtis also notes that if there is a gap between the amount of time it takes to complete a Ph.D. and the amount of time a student’s funding lasts, this can slow down the Ph.D. completion process. “Keep in mind that if you run out of funding at some point during your doctorate, you will need to find paid work, and this will leave you even less time to focus on writing your dissertation,” he says. “If one of the programs you’re looking at has a record of significantly longer – or shorter – times to competition, this is good information to take into consideration.”

Pierre Huguet, the CEO and co-founder of H&C Education, says prospective Ph.D. students should be aware that a Ph.D. is designed to prepare a person for a career as a scholar. “Most of the jobs available to Ph.D. students upon graduation are academic in nature and directly related to their fields of study: professor, researcher, etc.,” Huguet wrote in an email. “The truth is that more specialization can mean fewer job opportunities. Before starting a Ph.D., students should be sure that they want to pursue a career in academia, or in research. If not, they should make time during the Ph.D. to show recruiters that they’ve traveled beyond their labs and libraries to gain some professional hands-on experience.”

Jack Appleman, a business writing instructor, published author and Ph.D. candidate focusing on organizational communication with the  University at Albany—SUNY , says Ph.D. programs require a level of commitment and focus that goes beyond what is necessary for a typical corporate job. A program with flexible course requirements that allow a student to customize his or her curriculum based on academic interests and personal obligations is ideal, he says.

[ READ: Ph.D. Programs Get a Lot More Practical.  ]

Joan Kee, a professor at the University of Michigan  with the university’s history of art department, says that the length of time required for a Ph.D. varies widely depending on what subject the Ph.D. focuses on. “Ph.D. program length is very discipline and even field-specific; for example, you can and are expected to finish a Ph.D, in economics in under five years, but that would be impossible in art history (or most of the humanities),” she wrote in an email.

Jean Marie Carey, who earned her Ph.D. degree in art history and German from the  University of Otago  in New Zealand, encourages prospective Ph.D. students to check whether their potential Ph.D. program has published a timeline of how long it takes a Ph.D. student to complete their program. She says it is also prudent to speak with Ph.D. graduates of the school and ask about their experience.

Bennett urges prospective Ph.D. students to visit the campuses of their target graduate programs since a Ph.D. program takes so much time that it is important to find a school that feels comfortable. She adds that aspiring Ph.D. students who prefer a collaborative learning environment should be wary of graduate programs that have a cut-throat and competitive atmosphere, since such students may not thrive in that type of setting.

[ READ: 4 Fields Where Doctorates Lead to Jobs.  ]

Alumni of Ph.D. programs note that the process of obtaining a Ph.D. is arduous, regardless of the type of Ph.D. program. “A Ph.D. is a long commitment of your time, energy and financial resources, so it’ll be easier on you if you are passionate about research,” says Grace Lee, who has a Ph.D. in neuroscience and is the founder and CEO of Mastery Insights, an education and career coaching company, and the host of the Career Revisionist podcast.

“A Ph.D. isn’t about rehashing years of knowledge that is already out there, but rather it is about your ability to generate new knowledge. Your intellectual masterpiece (which is your dissertation) takes a lot of time, intellectual creativity and innovation to put together, so you have to be truly passionate about that,” Lee says.

Erin Skelly, a graduate admissions counselor at the IvyWise admissions consulting firm, says when a Ph.D. students struggles to complete his or her Ph.D. degree, it may have more to do with the student’s academic interests or personal circumstances than his or her program.

“The time to complete a Ph.D. can depend on a number of variables, but the specific discipline or school would only account for a year or two’s difference,” she wrote in an email. “When a student takes significantly longer to complete a Ph.D. (degree), it’s usually related to the student’s coursework and research – they need to take additional coursework to complete their comprehensive exams; they change the focus of their program or dissertation, requiring extra coursework or research; or their research doesn’t yield the results they hoped for, and they need to generate a new theory and conduct more research.”

Skelly warns that the average completion time of a Ph.D. program may be misleading in some cases, if the average is skewed based on one or two outliers. She suggests that instead of focusing on the duration of a particular Ph.D. program, prospective students should investigate the program’s attritition and graduation rates.

“It is worthwhile to look at the program requirements and the school’s proposed timeline for completion, and meet current students to get their input on how realistic these expectations for completion are,” Skelly says. “That can give you an honest idea of how long it will really take to complete the program.”

Searching for a grad school? Access our  complete rankings  of Best Graduate Schools.

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Excel in a number of different scientific careers

Program Overview

The Graduate Program in Cell & Developmental Biology (CDB) provides outstanding doctoral training in fundamental aspects of cell and developmental biology, ranging from stem cells to regenerative medicine and organogenesis to cancer biology. Research teams in CDB employ high-resolution microscopy, live single cell imaging, biochemistry-based methods, sophisticated genetics including gene editing, and systems-based strategies to understand the basic building block of life, the cell.

Research activities in CDB place a strong emphasis on quantitative and computational skills, cover gametes as well as highly differentiated and specialized cell types, and involve a broad array of model systems including budding yeast, flies, mice and human samples. CDB graduate students thus receive rigorous and comprehensive training and are integral members of a highly collaborative and collegial environment. Together these elements provide exceptional preparation for graduate students to excel in a number of different scientific careers.

Apply through our PIBS application

CDB faculty work in a very broad range of research areas:

  • Aging and degeneration
  • Cancer biology
  • Cell signaling
  • Cellular biophysics
  • Computational biology and mathematical modeling
  • Developmental genetics
  • Gene expression and genomics
  • Genetic and molecular models of human disease
  • Host-pathogen interactions
  • Intracellular transport
  • Neurobiology
  • Organogenesis and pattern formation in the eye, ear, limb, gut, heart, skeleton, hematopoietic system, urogenital system, reproductive system, and nervous system
  • Stem cell biology
  • Systems biology

Our faculty and students are extremely interactive and collaborative. Many CDB students have interdisciplinary projects involving multiple laboratories.

CDB is home to several special programs and research facilities:

The Microscopy and Image Analysis Laboratory (MIL) , a facility of more than 3,000 square feet housing state-of-the-art microscopy and imaging equipment, is housed within the Department of Cell and Developmental Biology.

The Center for Organogenesis  is an interdisciplinary group of scientists working on basic mechanisms by which organs and tissues are formed and maintained, using this knowledge to create long lasting artificial organs, stem cell therapies or organ transplantation systems that will correct genetic and acquired diseases. The Center has run an NIH-supported training grant for over 15 years.

The Michigan Center for hES Cell Research  was established in 2002, with funding from the Medical School and the NIH, for the study of human embryonic stem cells. The Consortium for Stem Cell Therapies  is now part of the Taubman Institute and provides training and resources for students and faculty interested in ESC and iPSC stem cell research.

Course requirements are flexible; the goal is to establish a basic working knowledge of current concepts in molecular biology, cell biology, biochemistry, genetics, and neurobiology while allowing students to pursue more advanced coursework related to their research interests, such as developmental biology, bioinformatics, gene expression, signal transduction, etc. In your first year, you will take the PIBS curriculum, which also fulfils CDB requirements. When you choose a research laboratory in CDB, you will enroll in our Seminars in Cell and Developmental Biology course, CDB 801. You will also select additional program courses and electives from the rich offerings at the University of Michigan.

Preliminary Examination

The preliminary exam consists of two checkpoints. The first is the preliminary exam in the form on a paper discussion. For students in good academic standing, this will take place in August at the end of their first year in order to advance to PhD candidacy. The second checkpoint takes place in the second year and is a vital component of the first thesis committee meeting. This checkpoint is comprised of two steps, the writing of a 6-page fellowship (NIH format) and the oral presentation of the proposed research to the thesis committee.

Teaching Requirement

As part of their professional training, CDB students serve as graduate student instructors (GSIs) in a graduate-level course for one semester.

Expected Length of Program

The usual time to degree is approximately 5 to 5 1/2 years.

CDB students run the course CDB 801 where they take turns presenting their research, give and get feedback on their research and presentations, explore career development opportunities, and interact with their fellow students in a supportive and cohesive environment. CDB students also participate in department committees, invite and host seminar speakers, help organize the annual departmental retreat, and plan/attend monthly happy hours.

CDB students have also expanded their skills and knowledge through university certificate programs such as those in teaching and translational science.

In recent years, a number of CDB students have been heavily involved in an outreach program called Developing Future Biologists (DFB). This is a graduate student-led educational organization that organizes and facilitates a week-long summer course aimed at teaching the next generation of biologists the fundamental concepts of developmental biology regardless of race, gender, or socioeconomic status.

In addition to scientific discovery, our mission is to train future leaders in cell and developmental biology, by encouraging high-impact research and providing teaching and mentorship of the highest quality.

Our students have received University and national recognition for their scholarship, research, and teaching, and their work is frequently published in high-impact journals (including recent papers in Nature Cell Biology, Science Signaling, Neuron, PLoS Biology, Current Biology, Developmental Cell, Molecular Cell, PLoS Pathogens, J Neurosci, J Virology, PNAS, J Cell Sci, EMBO J, Cell Metabolism, MCB, JBC, Blood, J Clin Invest, Development, etc.).

CDB graduates have gone on to successful careers in academic science, medical research, scientific consulting, and biotechnology.

Learn more about the Department of Cell & Developmental Biology.

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Department of Biology

PhD and MPhil in Biology

  Length Start dates ( )
PhD

3-4 years full-time
6-8 years part-time

January
April
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MPhil

2 years full-time
4 years part-time

January
April
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September

Biological research has a critical role to play in securing a sustainable future. Our interdisciplinary research contributes to solutions for three major global challenges - health and disease, sustainable food and fuel, and environmental change. 

Every step of our research is carried out with the help of our postgraduate students. No matter which area of biology you specialise in, you will be working alongside some of the world’s biggest names in their respective fields, at the forefront of scientific exploration. 

Your research

A PhD thesis can be up to 80,000 words long and must contain a substantial original contribution to scientific knowledge or understanding.

An MPhil thesis can be up to 60,000 words and is expected to display a good general knowledge of the field of study; a comprehensive knowledge of some part or aspect of the field of study; and a recognisable original contribution to knowledge or understanding.

Both theses are assessed by internal and external examiners, who will feed back on your work, and may require corrections. You will sit a final oral examination, known as a viva, within three months of submitting your thesis.

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Biological Sciences is ranked in the top ten overall in the UK

in the Times Higher Education's ranking of the latest Research Excellence Framework (REF) results 2021.

Access to state-of-the-art facilities

and expert advice through our Bioscience Technology Facility.

Dedicated study spaces

including a flexible workshop and creative learning lounge.

Explore funding for postgraduate researchers in Biology and wider postgraduate support.

Supervision

You'll be assigned a supervisor who will guide your work throughout your time with us. We'll match your research interests to their area of expertise.

Training and support

Throughout your course you'll have a supervisor to support you and guide your research. 

Work on your thesis is monitored by regular meetings of the Thesis Advisory Panel (at least once every six months for a full-time student and once a year for part-time students). The panel will review the progress of your research and provide additional advice and guidance.

Our research degrees include a cohort-based training programme to provide you with project-specific and transferable skills for your future career. This includes reading and appraising scientific literature, presenting confidently to a scientific audience, and writing accounts of your research.

length of phd biology

Course location

This course is run by the Department of Biology.

The Department of Biology is located on Campus West .

Entry requirements

To apply for these courses you should hold, or expect to hold, an honours degree in any biological subject with a 2:1 or first-class honours (or overseas equivalent).

We will consider applicants with backgrounds in chemistry, computer science, electronics, environment, mathematics, medicine or physics who can demonstrate a commitment to the biosciences.

English language requirements

If English is not your first language you must provide evidence of your ability.

Check your English language requirements

Apply for the PhD 

Apply for the MPhil  

Take a look at the supporting documents you may need for your application.

Find out more about how to apply .

Identify a supervisor

Before applying, you need to identify a research project that interests you. Look at the lists of academic staff in each of our research groups to see if there is a prospective supervisor working in an area which relates to your own research interests. You're welcome to email a prospective supervisor informally to find out more about their research or to ask if they might be considering taking on a postgraduate researcher.

Find a supervisor

As part of your application, you'll be invited to an interview (either face-to-face or online). As part of the interview process, you will usually be expected to make a short presentation on a recent piece of research you have conducted. If your first language is not English, you should be fluent enough to speak confidently about your intended area of research and discuss your background and interests with a panel of academics.

Careers and skills

Our dedicated careers team offer specific support including a programme of professional researcher development and careers workshops and 1:1 career support sessions. They will help you to build up your employability portfolio and to engage in activities that will build up your skills and experience within and outside of your research work.

You will have the opportunity to gain experience of demonstrating to undergraduate and taught Masters students, and receive practical advice on career planning. We hold a series of research seminars across all disciplines which are open to all researchers. There are also opportunities to present your own work through posters and talks.

A research degree is essential if you plan a career as an independent researcher with responsibility for your own research programme, whether in academia, research institutes or industry.

Career opportunities

Our graduates have gone on to work in a wide range of sectors, including:

  • clinical science
  • biotechnology
  • scientific research
  • postdoctoral positions
  • teaching and lecturing.

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PhD in Biological Science (EBI)

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Established in 1983, the EMBL International PhD Programme provides students with the best starting platform for a successful career in science. Characterised by first-class training, internationality, dedicated mentoring and early independence in research, it is among the world's most competitive PhD training schemes in molecular biology. All of EMBL's six outstations participate in the programme.

EMBL-EBI provides a highly collaborative, interdisciplinary environment in which research and service provision are closely allied. We are a world leader in bioinformatics research and service provision, as we are at the centre of global efforts to collect and disseminate biological data. We share a campus with the Wellcome Sanger Institute, 12 miles south of Cambridge in the United Kingdom. EMBL PhD students at EMBL-EBI are members of the University of Cambridge and one of its Colleges. They receive their degree from Cambridge University; the programme is coordinated in Heidelberg with local support at EBI. Please visit the EMBL International PhD Programme  pages to learn about how to apply. Please note all applicants must secure a place on the EMBL programme before submitting an application to the University of Cambridge.

EMBL PhD students receive theoretical and practical training and conduct a research project under the supervision of an EMBL faculty member, monitored by a thesis advisory committee. The duration of PhD studies is normally three-and-a-half to four years.

In Year 1 all new PhD students will attend the EMBL Predoctoral Core Course in Molecular Biology in Heidelberg; attend Primers for Predocs; undergo nomination of a thesis advisory committee to monitor student progress, and submit and defend a project proposal.

In Year 2 students will need to submit a second annual report to the thesis advisory committee, participate in the Bioinformatics course and predoc seminar day.

In Year 3 students will need to submit a third annual report to the thesis advisory committee.

In Years 3/4 students will need to write and submit their thesis:  PhD awarded following Degree Committee approval and successful completion of an oral examination.

The Postgraduate Virtual Open Day usually takes place at the end of October. It’s a great opportunity to ask questions to admissions staff and academics, explore the Colleges virtually, and to find out more about courses, the application process and funding opportunities. Visit the  Postgraduate Open Day  page for more details.

See further the  Postgraduate Admissions Events  pages for other events relating to Postgraduate study, including study fairs, visits and international events.

Key Information

3-4 years full-time, study mode : research, doctor of philosophy, european bioinformatics institute, course - related enquiries, application - related enquiries, course on department website, dates and deadlines:, lent 2024 (closed).

Some courses can close early. See the Deadlines page for guidance on when to apply.

Easter 2024 (Closed)

Michaelmas 2024 (closed), easter 2025, similar courses.

  • Biotechnology MPhil
  • Biological Sciences (Developmental Biology) by advanced study MPhil
  • Biological Science (MRC Laboratory of Molecular Biology) PhD
  • Basic and Translational Neuroscience MPhil
  • Biological Science (MRC Toxicology Unit) by thesis MPhil

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Genetics, Molecular & Cellular Biology Admissions

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Students seeking admission to the Genetics, Molecular and Cell Biology (GMCB) program apply to the Graduate School of Biomedical Sciences and select the GMCB program. Students interested in the Mammalian Genetics at JAX track must select this track when they apply to GMCB.

Prospective applicants are evaluated based on prior grades, three letters of recommendation, and personal statements. Prior research experience is strongly valued but is not required.

A personal interview is an important part of our evaluation process and may be conducted in person or virtually. An undergraduate major in the biological or life sciences is recommended, but not required.

The GRE is not required but can be submitted with the application.

The application is completed online on the GSBS Application Portal .

Information about application deadlines and the application process can be found in the Admissions section of this website.

  • How Long Does a PhD Take?

How Long is a PhD?

Written by Kristine Bagdassarian

A full-time PhD in the UK usually takes between three and four years, while a part-time project typically lasts between five and six years.

The the length of a PhD depends on a range of factors, such as your funding arrangements, your country and institution of study, and the nature of your research topic. For example, if you’re doing a funded PhD you’re more likely to face completion deadlines than self-funded PhD students.

Increasingly, the type of programme you’re enrolled in can also affect the duration of your doctorate degree. Some projects or programmes now include additional training, teaching or projects that can extend your overall PhD registration period.

This page explains some of the factors that can affect how many years a PhD degree lasts.

On this page

How long does a full-time phd take in the uk.

Full-time study is the most common approach to PhD research, particularly for funded projects. You’ll normally spend at least three years of full-time PhD study on your topic, beginning with research and data collection before moving on to ‘writing up’ your work.

As with other levels of study, your PhD will be your main focus and you’ll be expected to dedicate a lot of your time on it. Some students do work part-time alongside their studies, but a full-time PhD itself can often be the equivalent of a full-time job.

Why three to four years?

Compared to other qualifications, a PhD takes a considerable amount of time.

When you are just starting, three to four years may seem like a long time to work on a single project, but the volume of work required to obtain a doctorate is substantial and many students find that the time goes by faster than anticipated.

By the end of this period, you’ll be expected to have completed any training required by your funding body and / or institution, gained research skills and conducted original research and, finally, submitted and defended your thesis. Some universities and projects may also expect (or even require) you to present your work at conferences or publish some of it during your doctorate.

In addition to this, it’s advisable to have engaged in extra-curricular activities and projects to boost your professional and academic skillset. Between three and four years is plenty of time to do this, but it’s nowhere near as long as it might seem.

For more information on what you can expect during your project, take a look at our introduction to PhD study .

PhD registration period and writing-up period

The stated length of your PhD normally refers to the ‘registration period’ you set with your university at the start. This is the time period you intend to complete your PhD in and it will normally determine the ‘deadline’ for submitting your final thesis.

In the UK, the PhD registration period for full-time students is normally between three and three and a half years . In some departments and institutions, there is an understanding that students might enter a ‘writing-up’ period towards the end of their PhD. This is usually an extension to your registration, during which you don’t carry out any more research and just work on finalising your thesis and editing it for submission – writing it up, basically.

Can you complete a PhD in fewer than three years?

It’s technically possible to complete some PhDs in two years, if you have a very clear idea of the questions you want your project to answer and you’ve already done a lot of preparatory reading. This is very uncommon, however, and something that you should discuss with your supervisor. Some universities won’t let you submit a thesis before a certain point.

How many hours should I work while doing my PhD?

If you’re doing a full-time PhD, it’s wise to treat it like you would a full-time job, working the equivalent of 35 hours a week. However, you should be prepared to work longer hours during particularly busy stages of your doctorate, such as the writing up period and when you’re preparing for your viva.

Can you extend the length of a PhD?

Yes, it’s usually possible to extend the length of a PhD. You’ll need to apply to your university for an extended thesis submission date and have a valid reason for doing so (for example, a delay caused by something out of your control, COVID-19, a medical emergency or a bereavement). You should bear in mind that an extension isn’t guaranteed – particularly if it’s been caused by poor planning on your part. If your PhD has funding attached, there will usually be stricter deadlines than if you’re self-funding.

How long is an integrated PhD programme?

It’s quite common in STEM subjects to do an integrated PhD that includes a Masters qualification, usually taken after an undergraduate degree and referred to as a 1+3 PhD. These kinds of PhD typically take four years to complete.

PhD length in different countries

If you have your eyes on doing research abroad, there are a few things you need to be aware of in terms of study length. The three to four year PhD model is typical for the UK and most of Europe, with some countries in Asia also adopting a similar system (specific information on PhD studies in various countries can be found in our study abroad section ).

Length of a full-time PhD
3 to 4 years
4 to 6 years
3 to 6 years
3 years
3 to 4 years
3 to 4 years
3 to 4 years
3 to 4 years

In the USA, a PhD takes four to six years . There are several reasons for this. While in the UK, you tend to apply for a specific project, in the US, your application is aimed at a certain department and your actual proposal takes shape in the first couple of years of PhD study. The US model involves a two-phase programme, wherein the first phase is focused on coursework and training and the second phase (typically from the third year onward) is when the bulk of the research is done. At the end of the second year, a US student would be expected to have developed a research proposal to be defended in front of a research committee and to have passed a ‘qualifying exam’ in order to present their defence.

How long does a part-time PhD take?

Part-time PhDs normally take about twice the time of full-time PhDs (around five to six years in the UK ). You’ll do everything a full-time PhD student does across your doctorate, but your PhD work will be a less intensive part of your weekly routine.

This type of PhD is a good way to accommodate other employment and / or family commitments alongside your research.

In some cases, it may even be possible to start on a part-time PhD and switch to full-time study (or vice versa) if your situation changes.

How long does a distance learning PhD take?

Distance learning is an option if you’re unable to be physically present at your university. Most distance learning PhDs are also studied part-time and take around five to six years .

This option is increasing in availability, but can be trickier to manage in some fields that require regular lab work or access to specialist facilities. As a long-distance PhD student, you can expect to communicate with your supervisor via email, Skype or other electronic means as well as potentially attend the institution of your study for a couple of weeks each year.

The length of PhD funding

However you study your PhD, your funding situation can play a big role in determining how long your registration lasts – and / or how long you can afford to research for. Most scholarships and studentships have set lengths (which won’t necessarily cover writing up).

In some cases, funding can also add extra elements to a PhD, and potentially increase its overall length. Alternatively, limitations set by your department or research group funding could urge you to finish your thesis in the three-year period without additional extensions, while self-funded PhDs could greatly depend on your own resources.

Structured PhDs

In the UK, many PhD programmes funded by the Research Councils are offered as ‘structured’ or ‘new route’ PhDs. These incorporate additional training projects, professional internships and other elements.

Such elements may take place alongside your research, or specific time may be set aside for them. In some cases, students are only matched up with a supervisor at the end of the first year. These sorts of programmes are often offered within Centres for Doctoral Training (CDTs) or Doctoral Training Centres (DTCs) .

Registration period and funding period

Sometimes your registration period can also be tied to your PhD funding. Most studentships only last for a certain time (even if your doctorate ends up taking longer) and payments for a doctoral student loan will be based on the stated length of your project or programme.

Self-funded PhDs

Self-funding (unsurprisingly) is not restricted by funder deadlines and can be more flexible – particularly if you need to extend for writing up. However, self-funded PhDs require careful planning for tuition and living costs alongside any ‘hidden’ expenses, such as equipment and travel to events / conferences.

Although self-funding can ease the stress surrounding a strict final deadline, it is important to keep in mind that resources for support can place pressure on completion of the project. In addition, universities also still tend to set a maximum registration period.

The best way to find out how long a PhD is in your subject is to have a look around. Check our PhD database or, for more information on PhDs, explore the rest of our advice section !

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How Long Does It Take to Get a PhD?

If you aspire to rise to the top of your field, then you may have your sights set on a PhD.

PhD students in a group study

Earning a doctoral degree can be a years-long process, but choosing an accelerated doctoral online program may help you complete your program more quickly.

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Whether you’re wanting to earn one of the highest paying doctoral degrees or you have a specific one in mind, this guide can help walk you through how long it takes to complete your PhD program.

a watch showing years

For a traditional, campus-based PhD program, the average time to finish a PhD is 8 years. Fulfilling the program’s requirements will often demand a serious investment of your time.

Even still, some people are able to finish their programs in just 3 to 6 years. Multiple factors may influence the overall length of your program.

Required Credit Hours

Many PhD programs require you to earn 120 credit hours before entering the exam and dissertation phases.

Fortunately, there are PhD programs without such high credit-hour demands. For example, at some universities, you may earn a PhD with only 60 credit hours.

Full-Time vs. Part-Time Schedule

Enrolling in a doctoral program part-time may allow you to keep up with your regular job. You’ll have to decide whether you prefer the flexibility of part-time schooling or the faster schedule of full-time studies.

Final Project Requirements

Many PhD programs end with the completion of a dissertation. This assignment may take years to complete, so PhD students often end up in the all-but-dissertation (ABD) phase for quite some time.

University Scheduling

Some schools promote their ability to help you through the PhD process faster than normal. Accelerated class schedules with eight-week online courses may speed your studies along. Focused attention from dissertation advisors may help as well.

PhD Program Components

students in class

Before you enroll in a PhD program, it’s important to know some of the basic requirements:

Prerequisites

Most schools require you to already hold a master’s degree, but some offer bachelor’s-to-PhD programs.

Length to Completion

On average, it takes eight years to earn a PhD. Even still, completing doctoral coursework and a dissertation in three to four years is not unheard of.

Topic of Interest

PhD stands for Doctor of Philosophy, but that doesn’t mean you’ll be getting a philosophy degree. Your field of study will depend on your interests and the programs that your university offers. You may tailor your doctoral focus though your choice of a dissertation topic.

Steps to Completion

You’ll take advanced classes before sitting for comprehensive exams. After passing your exams, you’ll likely begin working on a dissertation. You must defend your dissertation before finishing your program.

Doctoral studies begin with a series of classes through which you may increase your knowledge of your field of study and learn about conducting research. These are advanced classes, so they should be more in-depth than the ones you took during your undergraduate and master’s programs.

The number of courses that you need to take can vary significantly. It’s not uncommon for PhD programs to require 120 credit hours of coursework. That amounts to about 40 classes.

At other schools, the requirements are lower. Your university’s program may involve just 60 credit hours or, possibly, even fewer. A less intense course load may significantly slash your time to completion.

Your university may require you to maintain a GPA above a minimum threshold. An unsatisfactory GPA may keep you from moving on to the next step of the PhD process.

Comprehensive Examinations

Universities often require students to demonstrate their readiness for a doctoral project before advancing to the next stage of their studies. Readiness is proven through comprehensive exams , which may also be known as:

  • Preliminary examinations
  • Major field examinations
  • General examinations

Often, comprehensive exams take the form of written or oral tests. In other situations, faculty may assess students’ readiness on the basis of a portfolio evaluation or a written paper.

Dissertation and Defense

PhD dissertation paper

A dissertation, also known as a graduate thesis, is a body of work that presents original research in your field. This manuscript focuses on a unique idea and includes evidence to support your thesis. During your doctoral studies, there are classes designed to help prepare you for your dissertation work.

The dissertation process may take several years. Once your manuscript is complete, you must defend it to the doctoral program faculty. After your defense, you may need to do further work on your manuscript, or the committee may decide that your dissertation is complete.

Not all programs require a dissertation. Instead, there may be an alternative doctoral project. Although both dissertations and capstone projects are rigorous, projects can sometimes be completed within a shorter time frame.

Average Time to Complete PhD by Field of Study

Students in some disciplines usually take a lot more time to finish their doctoral work than students in other fields.

If you’re studying in the following scientific fields, you may be more likely to earn your on-campus degree in seven years or less:

  • Physics — average of five years
  • Psychology — average of five to seven years

On the other hand, if your field of study relates more to the humanities, your on-campus degree program may take longer:

  • History — average of eight years
  • English — average of eight years
  • Education — average of 13 years

These are the traditional figures. There are ways to finish faster.

Why Does It Take So Long to Finish a Traditional PhD?

student studying in a college library

Some schools require doctoral students to take around 40 classes, which, in a traditional on-campus setting, may take years. After completing the coursework, you must write your dissertation and defend it. The dissertation process alone might take multiple years.

Doctoral programs online may help shorten the PhD process to three or four years. Fewer credit hours may be required, and the classes may be delivered in an accelerated format.

Schools with an emphasis on quick doctoral programs may also offer dissertation advisors to efficiently guide students through that phase. Alternatively, some universities allow students to complete capstone projects that don’t take as long as dissertations.

Getting a PhD Online vs. Campus

student working on her laptop

Online education has changed students’ options for earning a PhD. These days, aspiring students may choose whether to attend classes on a college campus or online.

Traditional programs may require you to relocate to the university’s campus and attend school full-time. On average, it takes just over eight years to complete those programs. The benefits of choosing an online school instead may include:

Faster Progress

Accelerated eight-week courses may allow you to finish your course load sooner. You may complete your entire program in just three or four years.

Multiple Start Dates

Online programs often let you join throughout the year, so you don’t have to put your studies on hold until the fall semester.

Flexibility

Not being required to move to campus or come to class at set times may allow you to work your studies around your schedule.

Equal Status

Online programs are just as rigorous as on-campus ones. As long as your university is accredited, your degree will be just as valuable as one from a traditional university setting.

Cost-Savings

Finishing your doctoral studies faster may mean that you pay less tuition.

How to Finish Your PhD in Less Time

PhD graduation ceremonies

Although you can’t earn a doctoral degree overnight, you shouldn’t have to spend the majority of your working years striving toward PhD-completion. The following tips for accelerating the PhD process may help you finish your studies more quickly than the average doctoral student.

1. Use What You Already Know

Every school requires a minimum number of credit hours that you must earn in the pursuit of your degree. To help you meet this threshold, some schools will allow you to transfer in credits from other doctoral programs. Universities may also give you credit for your professional experience. Reducing your class load may save you both time and money.

2. Look for Short Classes

Accelerated course schedules are one of the best ways to speed through the degree process. Every eight weeks, you’ll begin a new set of classes. Over the course of a year, there may be five different sessions during which you can take classes.

3. Work on Your Dissertation Throughout the Program

Traditionally, dissertation work begins once the classroom portion of your studies is over. Quick doctoral programs may allow you to begin the dissertation process while you’re still taking other classes. This approach, known as an embedded dissertation, may reduce the likelihood that you’ll drop out before finishing your final project. It might also speed up your doctoral timeline.

4. Ask for Help

A lack of support can lead some doctoral students to drop out. On the other hand, having a good support system can help you push through and finish your program more quickly. Build a team of family, friends, and academic mentors who can encourage you, guide you, and lend practical help when you’re feeling overwhelmed by school.

Why Get a PhD?

You may need to earn a doctoral degree to achieve your career goals . For example, if you want to become a clinical psychologist, this level of study is essential. Many scientific and research positions require doctoral studies. University faculty typically need to hold terminal degrees as well.

Even if a doctorate is not a requirement for your desired line of work, it may help you achieve greater success. You might be granted higher levels of responsibility, and you may earn more money. In some fields, those who hold PhDs make around 20% more than those with master’s degrees, according to the Bureau of Labor Statistics .

Do You Have to Have a Master’s Degree to Get a PhD?

Many schools consider a master’s degree an essential prerequisite for PhD admission. If you don’t already have a master’s degree, a bachelor’s-to-doctorate program may allow you to earn a master’s and a PhD for less time and money than it would take to pursue them separately.

How Long Does It Take to Get a PhD After a Master’s?

You may be able to complete your doctoral program in three to four years if you opt for an accelerated online program. On average, traditional on-campus PhD programs take around eight years to complete.

How Hard Is It to Finish a PhD?

Doctoral studies are challenging. That shouldn’t come as a surprise; if doctorates were easy to acquire, nearly every college graduate would end up with a PhD behind his or her name.

Approximately 50% of students who begin a PhD program don’t end up finishing. Many quit within two years of starting. Another large portion gives up upon reaching the dissertation phase.

Although all PhD programs are challenging, the flexible nature of online programs may help you find success. Choosing a doctoral track that doesn’t require a dissertation may help as well.

What Is the Easiest PhD to Get?

Easiest PhD to Get

All PhD programs are demanding, but you might have an easier time if you select a program that aligns with your interests and your career goals. The flexibility of online study may help your doctoral program seem less burdensome. In addition, capstone projects are sometimes easier than writing dissertations.

If earning a doctoral degree in a short time frame is important to you, then consider the many potential benefits that online programs have to offer. Within just a few years, you may be able to place the letters “PhD” at the end of your name.

length of phd biology

Oxford skyline including Radcliffe Square and the Bodleian

DPhil in Biology

  • Entry requirements
  • Funding and Costs

College preference

  • How to Apply

About the course

The Department of Biology offers a broad range of research opportunities for graduate students. The department maintains a large and interactive group of around 200 DPhil students.

As a doctoral student, your primary focus will be your research, which will usually be conducted within one or more of the existing research groups. You will be expected to develop an original research project under the guidance of your academic supervisors and normally on a topic related to their areas of expertise. In addition, you will be encouraged to make the most of the doctoral training and research methods provision available across the Mathematical, Physical and Life Sciences Division. The department also provides training to all DPhil students that focuses on developing both research and professional skills.

Doctoral research projects can be based on fieldwork (sometimes in remote places), laboratory experiments, analysis of existing data sets, or mathematical theory, but in all cases must be original and rigorous, leading to publications in peer-reviewed scientific journals. The majority of your time will, therefore, be spent in independent self-directed research and will involve a mixture of experimental, computational and observational activities.

You will be part of a vibrant educational research community that includes an active set of doctoral student-led events, seminars and workshops. You will have the opportunity to present and discuss your work in progress with your supervisor, other faculty members and peers, informally day-to-day and by attending a variety of seminars and workshops in the department and at conferences elsewhere.

The department has a friendly graduate community which provides a welcoming network to new students. The graduate student community offers a supportive environment, both social and scientific, allowing new graduates to develop into well-rounded and confident scientists. Graduates are a valued part of the department's research community and their work is showcased annually at the departmental Graduate Symposium.

Supervision

The allocation of graduate supervision for this course is the responsibility of the Department Biology and it is not always possible to accommodate the preferences of incoming graduate students to work with a particular member of staff. Under exceptional circumstances, a supervisor may be found outside the Department Biology.

As a graduate student you will be embedded in the research groups of two or more members of academic staff who act as your supervisors and provide the bulk of the research guidance and training. You will typically meet with your supervisor weekly or fortnightly to discuss your progress and developments in the field, although this may vary depending on the area of research, the nature of your project, and the stage of your studies.

All students will be initially admitted to the status of Probationer Research Student (PRS). Within a maximum of six terms as a PRS student, you will be expected to apply for transfer of status from Probationer Research Student to DPhil status. This application is normally made by the fourth term.

A successful transfer of status from PRS to DPhil status will require a report that will consist of an introductory part that could become the introduction to the thesis, one rather well-worked analysis of preliminary data representing roughly the equivalent of one thesis chapter, and a plan for the other chapters in the thesis including a detailed timetable. Students who are successful at transfer will also be expected to apply for and gain confirmation of DPhil status to show that your work continues to be on track. This will need to done within nine terms of admission.

Both milestones normally involve an interview with two assessors (other than your supervisor) and therefore provide important experience for the final oral examination.

Students will be expected to submit a substantial thesis of up to 50,000 words after three or, at most, four years from the date of admission. To be successfully awarded a DPhil in Biology you will need to defend your thesis orally ( viva voce ) in front of two appointed examiners.

Graduate destinations

The DPhil in Biology is a new course, replacing the DPhil in Plant Sciences and the DPhil in Zoology.

100% of alumni from the DPhil in Plant Sciences are employed, across a wide range of sectors, with 60% working in academic research positions. The department retains contact with its alumni to find out what they have gone on to do after completing their course. Past students from the Department of Plant Sciences have gone on to careers both in the UK and other countries in teaching and research in schools, universities, policy for government departments, industry, and administration at local and national levels.

Zoology graduates, like DPhil graduates in biological sciences at Oxford as a whole, continue to a wide range of careers after graduating. Between 2012 and 2017, 83% of DPhil graduates continued in bioscience-related posts, of which almost three quarters involved academic research.

Changes to this course and your supervision

The University will seek to deliver this course in accordance with the description set out in this course page. However, there may be situations in which it is desirable or necessary for the University to make changes in course provision, either before or after registration. The safety of students, staff and visitors is paramount and major changes to delivery or services may have to be made in circumstances of a pandemic, epidemic or local health emergency. In addition, in certain circumstances, for example due to visa difficulties or because the health needs of students cannot be met, it may be necessary to make adjustments to course requirements for international study.

Where possible your academic supervisor will not change for the duration of your course. However, it may be necessary to assign a new academic supervisor during the course of study or before registration for reasons which might include illness, sabbatical leave, parental leave or change in employment.

For further information please see our page on changes to courses and the provisions of the student contract regarding changes to courses.

Entry requirements for entry in 2024-25

Proven and potential academic excellence.

The requirements described below are specific to this course and apply only in the year of entry that is shown. You can use our interactive tool to help you  evaluate whether your application is likely to be competitive .

Please be aware that any studentships that are linked to this course may have different or additional requirements and you should read any studentship information carefully before applying. 

Degree-level qualifications

As a minimum, applicants should hold or be predicted to achieve the following UK qualifications or their equivalent:

  • a first-class or strong upper second-class undergraduate degree with honours in subjects appropriate to the DPhil project. Examples include, biology, natural science, and environmental science, but research in the department is very broad so the department is not prescriptive regarding previous degree subjects. Instead, you should make a case for why your  background makes you suitable for the research you plan to undertake.

Admission to the DPhil in Biology does not normally require a master's level qualification.

For applicants with a degree from the USA, the minimum GPA sought is 3.5 out of 4.0.

If your degree is not from the UK or another country specified above, visit our International Qualifications page for guidance on the qualifications and grades that would usually be considered to meet the University’s minimum entry requirements.

GRE General Test scores

No Graduate Record Examination (GRE) or GMAT scores are sought.

Other qualifications, evidence of excellence and relevant experience

  • Evidence of genuine interest in biology and sometimes other relevant fields of research (eg mathematics, engineering, and statistics) will also be taken into consideration. This might be demonstrated by, for example, having undertaken independent field work or research, relevant vacation employment, or having already made research publications or presentations.
  • Publications are not required.
  • It would be expected that graduate applicants would be familiar with the recent published work of their proposed supervisor.

English language proficiency

This course requires proficiency in English at the University's  higher level . If your first language is not English, you may need to provide evidence that you meet this requirement. The minimum scores required to meet the University's higher level are detailed in the table below.

Minimum scores required to meet the University's higher level requirement
TestMinimum overall scoreMinimum score per component
IELTS Academic (Institution code: 0713) 7.57.0

TOEFL iBT, including the 'Home Edition'

(Institution code: 0490)

110Listening: 22
Reading: 24
Speaking: 25
Writing: 24
C1 Advanced*191185
C2 Proficiency 191185

*Previously known as the Cambridge Certificate of Advanced English or Cambridge English: Advanced (CAE) † Previously known as the Cambridge Certificate of Proficiency in English or Cambridge English: Proficiency (CPE)

Your test must have been taken no more than two years before the start date of your course. Our Application Guide provides  further information about the English language test requirement .

Declaring extenuating circumstances

If your ability to meet the entry requirements has been affected by the COVID-19 pandemic (eg you were awarded an unclassified/ungraded degree) or any other exceptional personal circumstance (eg other illness or bereavement), please refer to the guidance on extenuating circumstances in the Application Guide for information about how to declare this so that your application can be considered appropriately.

You will need to register three referees who can give an informed view of your academic ability and suitability for the course. The  How to apply  section of this page provides details of the types of reference that are required in support of your application for this course and how these will be assessed.

Supporting documents

You will be required to supply supporting documents with your application. The  How to apply  section of this page provides details of the supporting documents that are required as part of your application for this course and how these will be assessed.

Performance at interview

Interviews are normally held as part of the admissions process.

Applicants will be selected for interview based on the aforementioned criteria.

Interviews will normally be held within four weeks of the application deadline and will either be in person or by remote video conferencing. 

The interview will be up to 30 minutes and will involve a ten minute presentation by the applicant on a suitable topic. Interviewees will be expected to answer questions based upon their presentation but potentially covering other relevant topics. Answers should demonstrate general knowledge, understanding of and enthusiasm for a particular area of research, competence in presentation skills and the English language, and where appropriate, numeracy in the treatment of biological data.

Other indicators will include suitability in terms of skill base and academic background for the DPhil in question, ability to discuss fundamental aspects of the relevant field in adequate depth and reasoning ability when answering biological questions.

How your application is assessed

Your application will be assessed purely on your proven and potential academic excellence and other entry requirements described under that heading.

References  and  supporting documents  submitted as part of your application, and your performance at interview (if interviews are held) will be considered as part of the assessment process. Whether or not you have secured funding will not be taken into consideration when your application is assessed.

An overview of the shortlisting and selection process is provided below. Our ' After you apply ' pages provide  more information about how applications are assessed . 

Shortlisting and selection

Students are considered for shortlisting and selected for admission without regard to age, disability, gender reassignment, marital or civil partnership status, pregnancy and maternity, race (including colour, nationality and ethnic or national origins), religion or belief (including lack of belief), sex, sexual orientation, as well as other relevant circumstances including parental or caring responsibilities or social background. However, please note the following:

  • socio-economic information may be taken into account in the selection of applicants and award of scholarships for courses that are part of  the University’s pilot selection procedure  and for  scholarships aimed at under-represented groups ;
  • country of ordinary residence may be taken into account in the awarding of certain scholarships; and
  • protected characteristics may be taken into account during shortlisting for interview or the award of scholarships where the University has approved a positive action case under the Equality Act 2010.

Processing your data for shortlisting and selection

Information about  processing special category data for the purposes of positive action  and  using your data to assess your eligibility for funding , can be found in our Postgraduate Applicant Privacy Policy.

Admissions panels and assessors

All recommendations to admit a student involve the judgement of at least two members of the academic staff with relevant experience and expertise, and must also be approved by the Director of Graduate Studies or Admissions Committee (or equivalent within the department).

Admissions panels or committees will always include at least one member of academic staff who has undertaken appropriate training.

Other factors governing whether places can be offered

The following factors will also govern whether candidates can be offered places:

  • the ability of the University to provide the appropriate supervision for your studies, as outlined under the 'Supervision' heading in the  About  section of this page;
  • the ability of the University to provide appropriate support for your studies (eg through the provision of facilities, resources, teaching and/or research opportunities); and
  • minimum and maximum limits to the numbers of students who may be admitted to the University's taught and research programmes.

Offer conditions for successful applications

If you receive an offer of a place at Oxford, your offer will outline any conditions that you need to satisfy and any actions you need to take, together with any associated deadlines. These may include academic conditions, such as achieving a specific final grade in your current degree course. These conditions will usually depend on your individual academic circumstances and may vary between applicants. Our ' After you apply ' pages provide more information about offers and conditions . 

In addition to any academic conditions which are set, you will also be required to meet the following requirements:

Financial Declaration

If you are offered a place, you will be required to complete a  Financial Declaration  in order to meet your financial condition of admission.

Disclosure of criminal convictions

In accordance with the University’s obligations towards students and staff, we will ask you to declare any  relevant, unspent criminal convictions  before you can take up a place at Oxford.

Academic Technology Approval Scheme (ATAS)

Some postgraduate research students in science, engineering and technology subjects will need an Academic Technology Approval Scheme (ATAS) certificate prior to applying for a  Student visa (under the Student Route) . For some courses, the requirement to apply for an ATAS certificate may depend on your research area.

The Department of Biology has research strengths spanning from evolution to ecology, behaviour to biomechanics, and development to disease. Researchers in the department work on wide range of organisms, including plants, animals and microbes. This diversity of research interests is reflected in the wide range of research facilities that are used by members of the department, including labs that are for cell and molecular biology, controlled growth facilities, field stations, and unique plant collections. Many of our students also carry out field work at in locations ranging from the Amazon rainforest to the Antarctic.

Within the department are several research institutes, including the Edward Grey Institute (EGI), the Wildlife Conservation Research Unit (WildCRU) , the Interdisciplinary Centre for Conservation Science (ICCS), and the Ineos Oxford Institute for Antimicrobial Research (IOI).

The EGI, founded in 1938, conducts research into the ecology, conservation, behaviour and evolution of birds, and is well known for its long-term population studies at Wytham Woods. Professor Ben Sheldon is the current EGI Director and is the Luc Hoffmann Professor in Field Ornithology.

The Interdisciplinary Centre for Conservation Science (ICCS) work at the interface of social and ecological systems, using a range of methodologies and interdisciplinary approaches to address key issues in current conservation. The research is focused around better understanding and influencing human behaviour and its impact on nature. Professor E.J. Milner-Gulland is the Group Leader.

The Wildlife Conservation Research Unit (WildCRU), directed by Professor David Macdonald CBE, is based at Tubney House eight miles from Oxford and seeks solutions to conservation problems through scientific research.

The IOI was established in 2021 to transform our approach to combatting antimicrobial resistance, which is one of the biggest health challenges of our time. Research at the IOI focuses on understanding the factors that drive the spread of antimicrobial resistance in the settings where it poses the greatest threat to human health and on developing new antimicrobials. Professor Timothy Walsh played a key role in the establishment of the IOI and he is one of the academic leads of the institute.

In 2024, the Department of Biology plans to move into the new Life and Mind Building. The Life and Mind Building will transform the education experience for students, providing new laboratories and meeting spaces for undergraduates, postgraduates and researchers, as well as lecture theatres, specialised support laboratories and opportunities for public engagement with our research. It will be the largest building project the University has ever undertaken and will be a catalyst for the advancement of psychological and biological science both at the University of Oxford and on a global platform.

The Department of Biology is one of the leading UK university departments dedicated to research and teaching in biology, possessing world-class strengths across the breadth of modern biological science research.

The department’s research is organised into five sections:

  • Behaviour and Biomechanics
  • Ecology and Evolution
  • Evolution and Developmental Biology
  • Microbiology and Infectious Disease
  • Molecular Plant Biology

There is considerable overlap between these sections, with many members of the department working in more than one section, and many research projects that cut across section boundaries. Indeed, a key characteristic of the department is that it works as a well-integrated whole with collaborations developing naturally between researchers working on diverse topics

All of the department’s laboratories are excellently equipped for modern cell and molecular technologies. In addition, you will have access to a range of unique facilities in the form of the living collections and arboretum of the University’s Botanic Garden and two on-site herbaria of international standing.

There are two routes into undertaking your doctoral research at the department. You may apply directly to the DPhil in Biology. Alternatively, you may apply to one of the University’s Doctoral Training Programmes . The latter are fully-funded, four-year graduate training programmes which involve a training period of taught courses for around three to six months before deciding on a DPhil project. Applicants are encouraged to consider both entry routes.

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The University expects to be able to offer over 1,000 full or partial graduate scholarships across the collegiate University in 2024-25. You will be automatically considered for the majority of Oxford scholarships , if you fulfil the eligibility criteria and submit your graduate application by the relevant December or January deadline. Most scholarships are awarded on the basis of academic merit and/or potential. 

For further details about searching for funding as a graduate student visit our dedicated Funding pages, which contain information about how to apply for Oxford scholarships requiring an additional application, details of external funding, loan schemes and other funding sources.

Please ensure that you visit individual college websites for details of any college-specific funding opportunities using the links provided on our college pages or below:

Please note that not all the colleges listed above may accept students on this course. For details of those which do, please refer to the College preference section of this page.

Further information about funding opportunities for this course can be found on the department's website.

Annual fees for entry in 2024-25 

Home£10,070
Overseas£33,370

IMPORTANT : Please note that while most of the content of these pages relates to the course starting in 2024-25, this information about course fees and the additional information section on this page relate to entry in 2025-26 . The remaining content will be updated for 2025-26 entry later in September.

Information about course fees

Course fees are payable each year, for the duration of your fee liability (your fee liability is the length of time for which you are required to pay course fees). For courses lasting longer than one year, please be aware that fees will usually increase annually. For details, please see our guidance on changes to fees and charges .

Course fees cover your teaching as well as other academic services and facilities provided to support your studies. Unless specified in the additional information section below, course fees do not cover your accommodation, residential costs or other living costs. They also don’t cover any additional costs and charges that are outlined in the additional information below.

Continuation charges

Following the period of fee liability , you may also be required to pay a University continuation charge and a college continuation charge. The University and college continuation charges are shown on the Continuation charges page.

Where can I find further information about fees?

The Fees and Funding  section of this website provides further information about course fees , including information about fee status and eligibility  and your length of fee liability .

Additional information

There are no compulsory elements of this course that entail additional costs beyond fees (or, after fee liability ends, continuation charges) and living costs. However, please note that, depending on your choice of research topic and the research required to complete it, you may incur additional expenses, such as travel expenses, research expenses, and field trips. You will need to meet these additional costs, although you may be able to apply for small grants from your department and/or college to help you cover some of these expenses.

Living costs

In addition to your course fees, you will need to ensure that you have adequate funds to support your living costs for the duration of your course.

For the 2024-25 academic year, the range of likely living costs for full-time study is between c. £1,345 and £1,955 for each month spent in Oxford. Full information, including a breakdown of likely living costs in Oxford for items such as food, accommodation and study costs, is available on our living costs page. The current economic climate and high national rate of inflation make it very hard to estimate potential changes to the cost of living over the next few years. When planning your finances for any future years of study in Oxford beyond 2024-25, it is suggested that you allow for potential increases in living expenses of around 5% each year – although this rate may vary depending on the national economic situation. UK inflationary increases will be kept under review and this page updated.

Students enrolled on this course will belong to both a department/faculty and a college. Please note that ‘college’ and ‘colleges’ refers to all 43 of the University’s colleges, including those designated as societies and permanent private halls (PPHs). 

If you apply for a place on this course you will have the option to express a preference for one of the colleges listed below, or you can ask us to find a college for you. Before deciding, we suggest that you read our brief  introduction to the college system at Oxford  and our  advice about expressing a college preference . For some courses, the department may have provided some additional advice below to help you decide.

The following colleges accept students on this course:

  • Balliol College
  • Brasenose College
  • Campion Hall
  • Christ Church
  • Green Templeton College
  • Hertford College
  • Jesus College
  • Keble College
  • Kellogg College
  • Lady Margaret Hall
  • Linacre College
  • Lincoln College
  • Magdalen College
  • Merton College
  • New College
  • Pembroke College
  • The Queen's College
  • Reuben College
  • St Anne's College
  • St Catherine's College
  • St Cross College
  • St Edmund Hall
  • St Hilda's College
  • St Hugh's College
  • St John's College
  • St Peter's College
  • Somerville College
  • Wadham College
  • Wolfson College
  • Worcester College

Before you apply

Our  guide to getting started  provides general advice on how to prepare for and start your application. You can use our interactive tool to help you  evaluate whether your application is likely to be competitive .

If it's important for you to have your application considered under a particular deadline – eg under a December or January deadline in order to be considered for Oxford scholarships – we recommend that you aim to complete and submit your application at least two weeks in advance . Check the deadlines on this page and the  information about deadlines and when to apply  in our Application Guide.

Application fee waivers

An application fee of £75 is payable for each application to this course. Application fee waivers are available for the following applicants who meet the eligibility criteria:

  • applicants from low-income countries;
  • refugees and displaced persons; 
  • UK applicants from low-income backgrounds; and 
  • applicants who applied for our Graduate Access Programmes in the past two years and met the eligibility criteria.

You are encouraged to  check whether you're eligible for an application fee waiver  before you apply.

Readmission for current Oxford graduate taught students

If you're currently studying for an Oxford graduate taught course and apply to this course with no break in your studies, you may be eligible to apply to this course as a readmission applicant. The application fee will be waived for an eligible application of this type. Check whether you're eligible to apply for readmission .

Application fee waivers for eligible associated courses

If you apply to this course and up to two eligible associated courses from our predefined list during the same cycle, you can request an application fee waiver so that you only need to pay one application fee.

The list of eligible associated courses may be updated as new courses are opened. Please check the list regularly, especially if you are applying to a course that has recently opened to accept applications.

Do I need to contact anyone before I apply?

Before you apply, you will need to identify the areas of research that interest you and a named  potential supervisor(s)  within the Department of Biology. 

You will need to  research the profiles of the departments’ academics . Once you have identified a potential supervisor(s), you should contact them to discuss potential projects and funding routes.

Completing your application

You should refer to the information below when completing the application form, paying attention to the specific requirements for the supporting documents .

For this course, the application form will include questions that collect information that would usually be included in a CV/résumé. You should not upload a separate document. If a separate CV/résumé is uploaded, it will be removed from your application .

If any document does not meet the specification, including the stipulated word count, your application may be considered incomplete and not assessed by the academic department. Expand each section to show further details.

Proposed field and title of research project

Under the 'Field and title of research project' please enter your proposed field or area of research if this is known. If the department has advertised a specific research project that you would like to be considered for, please enter the project title here instead.

You should not use this field to type out a full research proposal. You will be able to upload your research supporting materials separately if they are required (as described below).

Proposed supervisor

Under 'Proposed supervisor name' enter the name of the academic(s) whom you would like to supervise your research. 

You can enter up to four names and you should list them in order of preference or indicate equal preference.

Referees: Three overall, academic and/or professional

Whilst you must register three referees, the department may start the assessment of your application if two of the three references are submitted by the course deadline and your application is otherwise complete. Please note that you may still be required to ensure your third referee supplies a reference for consideration.

Your references will used to help assessment of your intellectual ability, academic achievement, motivation and research potential. In this context, references from academics able to comment on your performance on previous university courses are particular relevant. However, one or more references from previous research projects, industrial placements or other relevant professional activities are equally welcome.

Official transcript(s)

Your transcripts should give detailed information of the individual grades received in your university-level qualifications to date. You should only upload official documents issued by your institution and any transcript not in English should be accompanied by a certified translation.

More information about the transcript requirement is available in the Application Guide.

Statement of purpose/personal statement and research proposal: A maximum of 500 words each

Your statement of purpose/personal statement and research proposal should be submitted as a single, combined document with clear subheadings. Please ensure that the word counts for each section are clearly visible in the document.

Statement of purpose/personal statement

Please provide a cogent personal statement, written in English, arguing why you should be considered for the DPhil based on your previous experience and career goals.

If possible, please ensure that the word count is clearly displayed on the document.

The personal statement will also be assessed for evidence of motivation, of understanding of the proposed field of study (both broadly and in the specific project area being considered), and of your ability to present a reasoned argument in English.

Research proposal

Describe a current research problem within the remit of the DPhil in Biology, briefly indicate the information required to solve it and suggest a line of research that, if conducted, could fill this knowledge gap. No bibliography is required but if one is included, it must be counted in the word limit.  

This will be assessed for:

  • understanding of the research question and approaches proposed
  • originality of the research and/or proposed approach
  • ability to present a reasoned case in English
  • preliminary knowledge of research techniques.

Start or continue your application

You can start or return to an application using the relevant link below. As you complete the form, please  refer to the requirements above  and  consult our Application Guide for advice .

Application Guide   Apply

ADMISSION STATUS

Closed to applications for entry in 2024-25

Register to be notified via email when the next application cycle opens (for entry in 2025-26)

12:00 midday UK time on:

Friday 10 November 2023 Applications more likely to receive earlier decisions

Friday 5 January 2024 Latest deadline for most Oxford scholarships

Friday 1 March 2024 Applications may remain open after this deadline if places are still available - see below

A later deadline shown under 'Admission status' If places are still available,  applications may be accepted after 1 March . The 'Admissions status' (above) will provide notice of any later deadline.

Key facts
 Full Time Only
Course codeRD_BG1
Expected length3 to 4 years
Places in 2024-25c. 49
Applications/year*180
Expected start
English language

*Two-year average (applications for entry in 2022-23 to 2023-24)

Further information and enquiries

This course will be offered by the new Department of Biology

  • Course page on the department's website
  • Funding information from the department
  • Academic and research staff
  • Departmental research
  • Mathematical, Physical and Life Sciences
  • Residence requirements for full-time courses
  • Postgraduate applicant privacy policy

Course-related enquiries

Advice about contacting the department can be found in the How to apply section of this page

✉ [email protected]

Application-process enquiries

See the application guide

Visa eligibility for part-time study

We are unable to sponsor student visas for part-time study on this course. Part-time students may be able to attend on a visitor visa for short blocks of time only (and leave after each visit) and will need to remain based outside the UK.

length of phd biology

  • How Long Is a PhD Thesis?
  • Doing a PhD

It’s no secret that one of the most challenging aspects of a PhD degree is the volume of work that goes into writing your thesis . So this raises the question, exactly how long is a thesis?

Unfortunately, there’s no one size fits all answer to this question. However, from the analysis of over 100 PhD theses, the average thesis length is between 80,000 and 100,000 words. A further analysis of 1000 PhD thesis shows the average number of pages to be 204 . In reality, the actual word count for each PhD thesis will depend on the specific subject and the university it is being hosted by. This is because universities set their own word length requirements, with most found to be opting for around 100,000.

To find out more about how these word limits differ between universities, how the average word count from STEM thesis differ from non-STEM thesis and a more detailed breakdown from the analysis of over 1000 PhDs, carry on reading the below.

Word Count Differences Between Universities

For any PhD student writing a thesis, they will find that their document will be subject to a word limit set by their university. In nearly all cases, the limit only concerns the maximum number of words and doesn’t place any restrictions on the minimum word limit. The reason for this is that the student will be expected to write their thesis with the aim of clearly explaining their research, and so it is up to the student to determine what he deems appropriate.

Saying this, it is well accepted amongst PhD students and supervisors that the absence of a lower limit doesn’t suggest that a thesis can be ‘light’. Your thesis will focus on several years worth of original research and explore new ideas, theories or concepts. Besides this, your thesis will need to cover a wide range of topics such as your literature review, research methodology, results and conclusion. Therefore, your examiners will expect the length of your thesis to be proportional to convey all this information to a sufficient level.

Selecting a handful of universities at random, they state the following thesis word limits on their website:

  • University of Edinburgh: 100,000
  • University of Exeter: 100,000
  • University of Leister: 80,000
  • University of Bath: 80,000
  • University of Warwick: 70,000

The above universities set upper word limits that apply across the board, however, some universities, such as the University of Birmingham and the University of Sheffield, set different word limits for different departments. For example, the University of Sheffield adopts these limits:

  • Arts & Humanities: 75,000
  • Medicine, Dentistry & Health: 75,000
  • Science: 80,000
  • Social Sciences: 75,000-100,000

Although there’s a range of limit, it’s safe to say that the majority fall within the 80,000 to 100,000 bracket.

Word Count Based on Data from past Theses

A poll of 149 postdocs.

In mid-2019, Dr Eva Lantsoght, a published author, academic blogger and Structural Engineering Professor, conducted a poll which asked postgraduate doctoral students to share the length of their final thesis. 149 PostDoc students responded to the survey, with the majority reporting a length falling within the ‘80,000 – 120,000 words’ bracket as seen below.

DiscoverPhDs_How-long-is-a-PhD-Thesis_Poll

Analysis of 1000 PhD Theses

Over a three-year time period, Dr Ian Brailsford, a then Postgraduate Learning Adviser at the University of Auckland, analysed 1000 doctoral thesis submitted to his university’s library. The PhD theses which formed the basis of his analysis were produced between 2008 to 2017 and showed:

  • Average number of pages = 204
  • Median number of pages = 198
  • Average number of chapters = 7.6

We should note that the above metrics only cover the content falling within the main body of the thesis. This includes the introduction, literature review, methods section, results chapter, discussions and conclusions. All other sections, such as the title page, abstract, table of contents, acknowledgements, bibliography and appendices were omitted from the count.

Although it’s impossible to draw the exact word count from the number of pages alone, by using the universities recommended format of 12pt Times New Roman and 1.5 lines spacing, and assuming 10% of the main body are figures and footnotes, this equates to an average main body of 52,000 words.

STEM vs Non-STEM

As part of Dr Ian Brailsford’s analysis, he also compared the length of STEM doctorate theses to non-STEM theses. He found that STEM theses tended to be shorter. In fact, he found STEM theses to have a medium page length of 159 whilst non-STEM theses had a medium of around 223 pages. This is a 40% increase in average length!

Can You Exceed the Word Count?

Whilst most universities will allow you to go over the word count if you need to, it comes with the caveat that you must have a very strong reason for needing to do so. Besides this, your supervisor will also need to support your request. This is to acknowledge that they have reviewed your situation and agree that exceeding the word limit will be absolutely necessary to avoid detriment unnecessary detriment to your work.

This means that whilst it is possible to submit a thesis over 100,000 words or more, it’s unlikely that your research project will need to.

How Does This Compare to a Masters Dissertation?

The average Masters dissertation length is approximately 20,000 words whilst a thesis is 4 to 5 times this length at approximately 80,000 – 100,000.

The key reason for this difference is because of the level of knowledge they convey. A Master’s dissertation focuses on concluding from existing knowledge whilst a PhD thesis focuses on drawing a conclusion from new knowledge. As a result, the thesis is significantly longer as the new knowledge needs to be well documented so it can be verified, disseminated and used to shape future research.

Finding a PhD has never been this easy – search for a PhD by keyword, location or academic area of interest.

Related Reading

Unfortunately, the completion of your thesis doesn’t mark the end of your degree just yet. Once you submit your thesis, it’s time to start preparing for your viva – the all-to-fun thesis defence interview! To help you prepare for this, we’ve produced a helpful guide which you can read here: The Complete Guide to PhD Vivas.

Browse PhDs Now

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Department of Biological Sciences

  • TTU Biology
  • Undergraduate

Online Biology Webpage Header

UNDERGRADUATE STUDIES 

•Bachelors •Major •Minor •Biology •Pre-Professional Health •Microbiology •Cell & Molecular •Ecology & Environmental Studies •Advising

Agave Biology Sculpture

Biology, as its etymological roots indicate, is the study of life. As such, it a field that is as diverse as it is exciting. Students completing one of the undergraduate degrees offered in our department will finish well poised to pursue career opportunities, graduate studies, as well as a wide variety of professional career paths such as medicine, dentistry, and veterinary medicine. Regardless of your chosen career path, our faculty and advisors here at Texas Tech are dedicated to your success through educational excellence.

Here you can read through these pages for more specific information about the degrees we offer. Our undergraduate advisors would be pleased to meet with you in person to discuss additional details about each program.

Dr. Tigga Kingston's Bat Research

UNDERGRADUATE MAJORS

Choosing one of the majors we offer is an excellent choice for many Texas Tech students. Our degrees not only provide an exceptional segue into fulfilling careers in science and medicine, but also our curriculum broadly provides the intrinsically valuable educational knowledge and experience that only a liberal arts degree in natural science can provide.

Please read on to learn more about each degree. 

TTU Biology Alumnus

All students in Biological Sciences are assigned to an academic advisor by last name. Students are welcome and encouraged to schedule an appointment with their academic advisor on a regular basis not just when you have a registration hold.

Biology advising at Texas Tech is not about meeting as a roadblock to registering for classes, it is about making collaborative decisions with your advisor that will help you meet your educational goals. We see advising as a relationship with equal parts of responsibility and engage in productive discussions on achieving educational and career goals.

Advising Appointments & Important Dates

Dr. Natasja van Gestel in Antarctica

Students who participate in science, technology, engineering, or math undergraduate research learn by doing. They are directly involved in a research project in their faculty mentor's laboratory. They become a part of the laboratory research group and discuss their research with faculty and undergraduate and graduate students. Undergraduate research students are given the opportunity to attend scientific meetings, present papers at these meetings, and often can publish their results in scientific journals.

Research Opportunities

Student conducting research

SCHOLARSHIPS

There are many different type of scholarship opportunities available. Consult the scholarship matrix at this website for information about basic qualifications for each scholarship. 

Scholarship Opportunities

PURSUING GRADUATE SCHOOL

Many students majoring in Biology contemplate pursuing graduate studies in their respective field at one point or another. A number of resources exist to aid students in getting into graduate school, and once accepted new graduate students are typically provided with some level of guidance to help assure their success.

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Contact TTU

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COMMENTS

  1. How Long Does It Take to Get a Ph.D. Degree?

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  2. Doctoral Degree Requirements

    Download Biology PhD Requirements (pdf - 107.45 KB) General Philosophy of the Ph.D. Program Biology is the most diverse of all the disciplines in the natural sciences. Consequently, the allied fields to which the various subdisciplines in Biology share natural affinities differ. For example, molecular biology makes connections with physical ...

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    This page details the application process for the graduate program in Biology, including the application timeline, application requirements, and information for international students and students with disabilities. MIT Graduate Biology is a doctoral program. There is no Masters offered. The average length of time until degree is 5 1/2 to 6 years. Apply Now The […]

  4. Doctor of Philosophy (PhD) in Biology

    The PhD in Biology is a research degree requiring graduate-level coursework, completion of a dissertation, and two semesters of participation in teaching (usually as a teaching fellow in laboratory or discussion sections of lecture courses led by Biology faculty). For most students, obtaining this degree typically involves five or more years of ...

  5. Ph.D. Program

    The Biology Ph.D. program is part of the larger Biosciences community at Stanford, which includes doctorate programs in the basic science departments at Stanford Medical School. There are two tracks within the Biology Ph.D. program: Cell, Molecular and Organismal Biology. Ecology and Evolution. (Previously a part of the Department of Biology ...

  6. Biology

    About the Program. Make an impact as an expert in your field with a PhD in Biology from Case Western Reserve University, one of the top research universities in the U.S. Our rigorous curriculum and research opportunities will prepare you to work at high-profile universities, in industry, at government agencies, or in renowned medical ...

  7. Graduate Admissions

    Stanford Biology PhD Program applications are made through Graduate Admissions. The application deadline for Autumn Quarter 2024 matriculation is December 5, 2023 at 11:59pm pst. The application for the Autumn 2024 cohort will be available in September 2023. Please review the Graduate Admissions website prior to starting your application.

  8. PhD in Biology

    The PhD program in Biology is a research-intensive program that also has a strong focus on teaching, designed to produce top scientists and educators with a broad base of knowledge to tackle the most important biological problems of today. This is accomplished through research training, graduate-level courses, seminars, and teaching experience.

  9. Harvard Biological & Biomedical Sciences PhD Program

    The Biological and Biomedical Sciences (BBS) Program at Harvard offers Ph.D. training in the biosciences, built outward from core training in contemporary genetics, biochemistry, and molecular, cellular, and mechanistic biology. Under BBS, there are interwoven research communities comprised of basic science departments and interdepartmental ...

  10. Information and Forms

    NSF Application - If eligible, Due October 18 (Life Sciences) or October 22 (Geosciences) TA Pre-Course Meeting Form - Due within the first two weeks of starting each TA position. TA Evaluation Form - Due after each TA position. Dissertation Lab Decision - Due May 1. First Year Evaluation and Planning Form - Due May 1. IDP Meeting - Due August 1.

  11. PhD in Biology: Requirements, Salary, Jobs, & Career Growth

    The length of time it takes to obtain a PhD in Biology depends on a variety of factors, including the program, the individual's level of preparedness, and the nature of the research. A typical PhD program in Biology, on the other hand, takes roughly 4-6 years to finish.

  12. PhD Program

    Number of offers extended: approx. 25 (about 9% of applicants) Number of offers accepted: 15. Time to completion: 6 year average. Teaching Assistant Requirement: Minimum 2 quarters TAing. Funding: Our department provides funding for the first five years of your program through a variety of teaching and research assistantships, fellowships, and ...

  13. Ph.D. in Biological Sciences

    Ken Hovis, Ph.D. Assistant Dean for Educational Initiatives Mellon College of Science, Carnegie Mellon Univeristy " As a prospective student in neuroscience, most of the graduate programs I applied to were neuroscience only programs. One of the biggest reasons I am so glad I chose the Biological Sciences graduate program at CMU, is because I not only gained access to excellent training in the ...

  14. Average Time To Obtain A Ph.D.

    According to Joseph Berger of the New York Times, the average length of a dissertation program today is 8.2 years (2). Terminal degrees in the hard sciences typically take a slightly shorter time to complete than do degrees in education and the humanities. The field of physics has a current average of five years.

  15. How Long Does It Take to Get a Ph.D. Degree?

    According to the Survey of Earned Doctorates, a census of recent research doctorate recipients who earned their degree from U.S. institutions, the median amount of time it took individuals who received their doctorates in 2017 to complete their program was 5.8 years. However, there are many types of programs that typically take longer than six ...

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    The Graduate Program in Cell & Developmental Biology (CDB) provides outstanding doctoral training in fundamental aspects of cell and developmental biology, ranging from stem cells to regenerative medicine and organogenesis to cancer biology. ... Expected Length of Program. The usual time to degree is approximately 5 to 5 1/2 years.

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    A PhD program typically takes four to seven years, but a variety of factors can impact that timeline. A PhD, or doctorate degree, is the highest degree you can earn in certain disciplines, such as psychology, engineering, education, and mathematics. As a result, it often takes longer to earn than it does for a bachelor's or master's degree.

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    Take a PhD or MPhil in biology and discover how our interdisciplinary links across the University can benefit your original research. ... Length Start dates (semester dates) PhD: 3-4 years full-time 6-8 years part-time. Apply for PhD. ... A PhD thesis can be up to 80,000 words long and must contain a substantial original contribution to ...

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    The duration of PhD studies is normally three-and-a-half to four years. In Year 1 all new PhD students will attend the EMBL Predoctoral Core Course in Molecular Biology in Heidelberg; attend Primers for Predocs; undergo nomination of a thesis advisory committee to monitor student progress, and submit and defend a project proposal.

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    Contact. Graduate School of Biomedical Sciences Tufts University Suite 501 136 Harrison Avenue Boston, MA 02111. 617-636-6767 [email protected]

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    For a traditional, campus-based PhD program, the average time to finish a PhD is 8 years. Fulfilling the program's requirements will often demand a serious investment of your time. Even still, some people are able to finish their programs in just 3 to 6 years. Multiple factors may influence the overall length of your program.

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    Graduate destinations. The DPhil in Biology is a new course, replacing the DPhil in Plant Sciences and the DPhil in Zoology. ... Expected length: 3 to 4 years: Places in 2024-25: c. 49: Applications/year* 180: Expected start: 13 October 2024: English language: Higher level required

  24. How Long Is a PhD Thesis?

    Unfortunately, there's no one size fits all answer to this question. However, from the analysis of over 100 PhD theses, the average thesis length is between 80,000 and 100,000 words. A further analysis of 1000 PhD thesis shows the average number of pages to be 204. In reality, the actual word count for each PhD thesis will depend on the ...

  25. Current Students

    Many students majoring in Biology contemplate pursuing graduate studies in their respective field at one point or another. A number of resources exist to aid students in getting into graduate school, and once accepted new graduate students are typically provided with some level of guidance to help assure their success. ...