1.5 courses: Biochemistry 2280A, Biology 2290F/G, 2581B2.5 courses from: Biology 3466B, 3592A, 3593B, 3594A, 3595A, 3596A/B, 3597A/B, 3598A/B, 4289A/B, 4540G, 4560B, 4561F, 4562B.