Biology at Whitman College began as part of a general science curriculum, taught by faculty who frequently covered multiple disciplines. As the college grew in the early 20th century, biology became more defined within the academic structure, with increased attention to laboratory instruction and field-based study. By the mid-1900s, the department had developed a strong reputation, with committed faculty leading students in hands-on learning through both coursework and practical investigation. During the 1950s and 1960s, biology was among the departments that maintained high enrollments despite broader institutional struggles, and faculty were noted for their dedication to teaching during years of limited resources.

In the post-war period, biology was part of the larger science division that benefited from gradual curricular reforms and faculty renewal. The department continued to adapt through the 1970s and into the early 21st century, aligning itself with national trends in undergraduate science education. Biology remained a stable and respected program as Whitman emphasized academic rigor and faculty scholarship, contributing to the college’s broader goals of academic excellence and national visibility.