The biology minor is intended to supplement one of Caltech's undergraduate degrees. It is designed for students who wish to broaden their studies beyond their major to include biology. Students completing the biology minor requirements will have the phrase "minor in biology" added to their transcripts.
- Biology fundamentals. Bi 8 and Bi 9.
- Intermediate Biology. Any two of the following classes: Bi 122; Bi 117; and NB/Bi/CNS 150; and Ch 41 a.
- Advanced Biology. 36 units of advanced biology electives (100- or 200-level) that are not applied to the above requirements and are not simultaneously used for fulfilling a requirement of the student's major option, approved by their assigned biology adviser or the option representative.