What will I learn?

The terminal basic research degree in Biological Sciences provides students with advanced training and research experience in biological fields ranging from ecology, evolutionary biology and genomics to cancer biology, comparative physiology and molecular biology, as well as in microbiology. You will study with world class research faculty working on every conceivable aspect of plants, animals and microbes. Current research projects are in progress in Texas and other parts of the United States, but also around the world in places like the Far East, Africa and Central and South America. Recent Ph.D. graduates from Biological Sciences have positions in colleges and universities as research and teaching faculty, in governmental agencies (e.g., the Center for Disease Control), and in research foundations (e.g., Smithsonian Tropical Research Institute).

The Department of Biological Sciences doctoral programs include tracks in the areas of animal physiology, ecology, evolution and systematic biology, microbiology, plant physiology, plant biotechnology, and quantitative biology.

Once admitted to a doctoral degree program, students may be required by their advisory committee to take a preliminary, diagnostic examination that includes subject matter usually required of undergraduates. If the preliminary examination reveals serious weaknesses in the student’s subject-matter background, the student may be required to take remedial courses designated by the advisory committee.

Doctoral students must have five members on their advisory committee. Otherwise, the basic degree requirements of the Graduate School determine the policy of the department.

All graduate students in the Ph.D. programs are required to take BIOL 6202 during their first fall semester after acceptance in the graduate degree program. During their first year, teaching assistants are required to take a special topics course (BIOL 6301) that emphasizes development of teaching skills.

Which department am I in?

College of Arts and Sciences

Study options

Full Time (4-5 years)

Tuition fees
US$15,693.00 per year

*Price shown is for indicative purposes, please check with institution

Start date

24 August 2020, 13 January 2021


College of Arts and Sciences

Texas Tech University,



79409, United States

Entry requirements

For students from United States

Students who have already earned a Bachelor's degree and wish to continue their education at the Master's or Doctoral level.

For international students

The applicant must have earned a bachelor’s degree from a regionally accredited institution in the United States or its equivalent from a foreign institution.

Test of English as a Foreign Language (TOEFL) - The minimum TOEFL score required is 79.

International English Language Testing Service (IELTS) - The minimum IELTS required score is an overall band score of 6.5 on the Academic version.

Pearson Test of English Academic (PTE Academic) - The minimum required PTE Academic score is 60.

Cambridge C2 Proficiency Test (Cambridge CPE) - The minimum required Cambridge CPE grade is a score of 180 or above.

Cambridge C1 Advanced Proficiency Test (Cambridge CAE) - The minimum required Cambridge CAE grade is a score of 175 or above.

Application Deadlines: Applications should be submitted by January 15th for fall and June 15th for spring semester.

Find your nearest IELTS test centre and test dates

There may be different IELTS requirements depending on your chosen course.


About this uni

The Wall Street Journal ranks TTU’s graduates in the U.S. Top 25 sought after by employers.

  • Located on an award-winning Spanish Renaissance style campus
  • 67 graduate certificate, 128 master's & 66 doctoral programs
  • Online courses were rated highly by U.S. News & World Report
  • Training students to be courageous and independent