Completion of first-year requirements, including Biology 1222 or 1223 with a mark of at least 60% in this principal course.

Chemistry 1050, or the former Chemistry 1020 or 023;
Physics 1028A/B (or Physics 1020 or 1024, or the former Physics 022 or 025);
1.0 course from: Applied Mathematics 1413, Calculus 1000A/B, 1100A/B, 1201A/B, 1301A/B, 1501A/B, Linear Algebra 1600A/B, Mathematics 1225A/B, 1228A/B, 1229A/B, or the former Mathematics 030, Statistical Sciences 1024A/B. If not completed in first year, the Mathematics requirement must be completed by the end of second year.

9.0 courses:

3.0 courses: Biochemistry 2280A, Biology 2290F/G, 2382B, 2483A, 2486A, 2581B.
0.5 course: Chemistry 2213A/B.
0.5 course from: Biology 2660A/B, 2672A/B.
0.5 course from: Biology 2244A/B, Statistical Sciences 2122A/B. Students may substitute Statistical Sciences 2035 or Psychology 2810 for this 0.5 course.
4.5 courses at the 2200 level or above, chosen from the Biology and Basic Medical Sciences Departments course offerings, of which at least 3.5 courses must be chosen from the Department of Biology. A maximum of 1.0 course may be at the 2200-2999 level and at least 1.5 of these courses must have a laboratory component.