There is no single department of biology at UC Berkeley; courses in the biological sciences are offered through many campus departments including the Departments of Integrative Biology; Environmental Science, Policy & Management; Molecular & Cell Biology; and Plant & Microbial Biology.
However, Berkeley offers three interdepartmental biology courses, which provide a broad, basic introduction to the biological sciences for both majors and non-majors. These courses are taught by faculty from the four departments named above. The name "biology" has been retained for these courses to reflect their interdepartmental character.
BIOLOGY 1A & BIOLOGY 1AL and BIOLOGY 1B are taught fall, spring, and summer semesters, and students may enroll in either the 1A series or 1B (but not both) during any semester. The courses do not need to be taken in any particular order.
For information regarding undergraduate programs and other courses in the biological sciences, see the following department listings in this Guide and visit the Biology @ Berkeley webpage.