The biology major (B.S.) is designed to prepare students interested in a wide variety of topics, including medicine, dentistry, veterinary medicine, academia, high school education, cell and molecular biology, ecology and evolution, or medical technology.  The department also offers an accelerated 4+1 program (B.S./M.S.) for students already pursuing an undergraduate degree in the department.

Undergraduate Course Requirements

All students majoring in biology, and those students desiring additional focus in one of the department's concentrations, must earn a grade of C or better in all required biology courses. All biology students must take the following core courses (course descriptions are available from the Undergraduate Catalog):

  • BIO 150, 151, 152, 250, 251, 252, 260, 261, 310
  • CHM 110, 111, 116, 117, 252, 253 (CHM 256 and 257 are required for students in the cell and molecular biology-preprofessional concentration, recommended for others)
  • MTH 115 or 121 (MTH 116 or 122 highly recommended)
  • PHY 107 and 108

At the completion of 90 semester hours, the student must have credit for BIO 150, 151, 152, 250, 251, 252, 260 and 261; CHM 110, 111, 116, 117, 252, 253; and one semester of calculus. Students not meeting these requirements will not be allowed to enroll in other biology courses until requirements are met. Students with more than 30 semester hours transferring into biology programs from other Bradley majors must have a GPA of 2.25 or greater and must have completed at least one semester each of introductory biology, introductory chemistry, and calculus. Students with 30 or fewer hours will be assessed on a case-by-case basis. In addition to the above requirements, each student must complete the additional requirements below with a grade of C or better in each biology course taken to graduate with a baccalaureate degree in biology.

Choose a minimum of one course (with combined required laboratory) from each of the following categories. Students must also take two additional courses (lab is optional) from any of the three categories.


  • BIO 312, 314, 375, 381, 382, 384, 464, 468, 503, 509, 525, 564, 568


  • BIO 302, 323, 324, 334, 361, 406, 419, 501, 506, 530, 561


  • BIO 420, 440, 450, 460, 463, 510, 519, 520, 540, 550, 563, 565

Undergraduates pursuing the biology major also have the option to complete one of the many concentrations offered by the department. To receive a concentration the student must complete a year-long research project and take additional upper division classes. The concentrations offered by the department are:

  • Cell and Molecular Biology-Preprofessional
  • Ecology and Evolutionary Biology
  • High School Teaching
  • Medical Technology

Courses necessary to earn the Bachelor’s Degree and concentrations are described below.

Interdisciplinary Majors

Separate, interdepartmental majors are offered for students interested in Environmental Science and Medical Laboratory Science.