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Biology PhD

Biology PhD

Gain the experience to make significant contributions to biological research with the Biology PhD program in the College of Science and Technology. The Biology PhD degree provides a rigorous, research-focused course of study. You’ll be prepared to pursue multiple career pathways related to the biological sciences, including postdoctoral and academic positions, and in related industries, such as biotechnology, bioengineering, healthcare and pharmaceutics. The Biology PhD program provides opportunities for you to receive funding for your degree with either a teaching or research assistantship, and a tuition waiver.

Biology PhD students are afforded the chance to choose which lab they want to join. During your first year, you can choose a specific research group immediately or you can rotate up to three research groups before deciding on a lab. Once you are admitted to candidacy, you’ll pursue specialized research toward the completion of your degree.

Faculty members perform cutting-edge research in different areas of specialization that include

  • cellular, developmental and molecular biology;
  • cellular and molecular neuroscience, which investigates the central nervous system and the mechanisms it governs;
  • computational biology, which focuses on computational evolutionary genomics;
  • ecology, an interdisciplinary field that investigates the complex relationships between living organisms and their environments;
  • evolutionary medicine, an interdisciplinary field that examines contemporary human disease within the larger context of evolutionary history;
  • genetic epidemiology, an interdisciplinary field that examines the impact of genetic and environmental factors on modern human disease; and
  • population genetics, a subfield of genetics and evolutionary biology that examines genetic change over time within and between populations.

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Coursework is interdisciplinary and students are encouraged to participate in research across other fields, including biochemistry, chemistry, computer science, ecology, environmental science, engineering, mathematics and physics. Doctoral candidates perform innovative research in many of the College of Science and Technology’s state-of-the-art centers and facilities, including the

  • , focused on the conservation, education and research of species and their impact on the environment;
  • , whose mission is to bring together scientists who work on genetic and evolutionary theory and who employ computational approaches; 
  • , focused on molecular evolutionary knowledge and tools to advance research and for product development in biomedicine and biodiversity
  • , where genetic research investigates treatments and cures to chronic illnesses such as cancer, cardiovascular disease and diabetes.

Learn more about the Department of Biology’s research centers and facilities.

    Professor and student examining coral

    Program Requirements

    Doctoral candidates have seven years to complete the required courses and examination, as well as a dissertation. All candidates must fulfill the following requirements for successful completion of the Biology PhD program.Ìý

    • The preliminary examination is designed to test a student’s understanding of biological phenomena, specific research areas and scientific writing. The preliminary examination comprises 
      • an original research proposal, a 15- to 20-page proposal that introduces a research problem and the student’s methodological plan for investigating the problem, and
      • the oral examination, which is administered after a student’s research proposal has been approved and tests a student’s understanding of the background and substance of the research proposal. (If a student’s research proposal is not approved, the student is considered to have not passed the oral examination.)
    • The doctoral dissertation is an original, empirical study that demonstrates a student's knowledge of research methods and mastery of the primary area of research. All dissertation research is conducted under the guidance of the Doctoral Advisory Committee.
    • The final dissertation defense is the culminating event for Biology PhD candidates. Students must successfully pass the dissertation defense for completion of the Biology PhD degree.  

    All Biology PhD candidates must have experience teaching at 51³Ô¹ÏÍø for a minimum of two semesters. This requirement can be satisfied through teaching assistantships in the Department of Biology.

    Learn more about the Biology PhD examination and dissertation requirements.Ìý

    Classes & Curriculum

    Following coursework in the first one to two years, you'll advance to candidacy and engage in research opportunities across the many labs and disciplines represented by faculty members. Doctoral students will undertake a preliminary examination, as well as an original dissertation, to demonstrate their knowledge of research methods and mastery of their primary research area.

    The Biology PhD curriculum requires 36 credit hours, including 15 hours of graduate seminar courses. Some of these courses include

    • Analytical Biotechnology
    • Cellular and Molecular Neuroscience
    • Contemporary Biology
    • General Biochemistry, and 
    • Evolutionary Genetics Genomics

    Learn more about required courses for the Biology PhD.

    Related Graduate Degrees

    *College of Engineering

    Related Graduate Certificates

    Tuition & Fees

    In keeping with 51³Ô¹Ï꿉۪s commitment to access and affordability, this Doctor of Philosophy offers a competitive level of tuition with multiple opportunities for financial support.

    are set annually by the university and are affected by multiple factors, including program degree level (undergraduate or graduate), course load (full- or part-time), in-state or out-of-state residency, and more. These tuition costs apply to the 2025–2026 academic year.

    Pennsylvania resident: $1,395.00 per credit
    Out-of-state: $1,824.00 per credit

    You can view the full .

    Our Advisors

    Faculty advisors can help you navigate your program and discuss research opportunities. There are two graduate advisors for the Department of Biology.

    Tonia Hsieh is an associate professor and the graduate chair in the Department of Biology.
    Phone: 215-204-0617
    Email:

    Roum Lay​ is the graduate administrator in the Department of Biology.
    Phone: 215-204-8854
    Email:Ìý

    Program Contact

    Tonia Hsieh is an associate professor and the graduate chair in the Department of Biology.
    Phone: 215-204-0617
    Email

    Student Clubs & Organizations

    If you can find the time to participate while meeting the demands of your degree program, student clubs offer valuable opportunities to meet fellow graduate students, researchers and professionals from science- and technology-related industries.

    Clubs and organizations for students pursuing a Biology degree include

    • the , which works to increase opportunities for students and help them complete their undergraduate and graduate degrees in STEM.
    • the , an organization that develops professional and leadership skills in doctoral students as well as encourages them to participate in public outreach.
    • , an organization that empowers Philadelphia middle school students to form an interest in STEM through science experiments and mentors.

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    Study Away

    If the demands of your degree program allow it, consider spending a summer or semester overseas building international connections with researchers from other countries. 51³Ô¹Ï꿉۪s study abroad program offers College of Science and Technology students opportunities to spend a summer or semester studying in China, Germany, Italy, South Korea or Taiwan. Learn more about your .

    Accreditation

    As a division within 51³Ô¹ÏÍø, the College of Science and Technology is accredited by the .

    Additional Program Information