Integrative Biology

The faculty of the Department of Organismic and Evolutionary Biology (OEB) study biological systems at all levels from molecules to ecosystems, united by a shared foundation in evolutionary biology. Our department offers courses in a broad range of topics, including: anatomy, behavior, biomechanics, development, ecology, entomology, evolution, forestry, genetics, genomics, marine biology, microbiology, molecular evolution, mycology, paleontology, physiology, plant sciences, oceanography, systematics, and zoology. 

The secondary field in Integrative Biology (IB) reflects this breadth. Students may have an interest in pursuing a secondary field of study in a particular sub-discipline or may prefer to sample broadly across the offerings of the department. Rather than draft a set of requirements for each possible field of study, the department chose a flexible set of requirements that should maximize students' freedom to craft their own programs in consultation with an academic adviser. 

REQUIREMENTS: 5 courses (20 credits) 

A secondary field requires the completion of five courses offered by members of the OEB department (for a full listing see For this purpose, all courses listed in the OEB course search on, including cross-listed courses, as well as Life Sciences 1b and Life Sciences 2, will count. 


All courses must be taken for a letter grade, with the exception of one approved Freshman Seminar. The grade minimum for a course to count toward the secondary field shall be C-. 

Courses taught by members of the department at Harvard Summer School will count toward the secondary field. One Freshman Seminar or one course in General Education may count toward the secondary field (in each case the course must be taught by a member of the department). One course taken while studying abroad may count toward the secondary field if approved in advance by the head tutor. 


Questions about the secondary field should be addressed to the IB Concentration Adviser (Dr. Andrew Berry; 617-495-0684; or IB Director of Undergraduate Studies (Dr. Gonzalo Giribet;