Breadcrumb Home Biology BIOL 4493 BIOL 4493: Special Topics in Biology Download as PDF Course Department Biology Credits 4 Course ID 001053 Upper–division treatment of selected topics of mutual interest to the professor and students. Open only to biology majors. Prerequisite: BIOL 3321. Requisites BIOL 4493 Prerequisites (With Grade of 'C' or Better): BIOL 3321