BFA concentration and majoring in biology

Colleges and Universities A-Z Boston University
1

are students able to major in something like biology, but concentrate in acting/musical theater once offered at the end of freshman year? if so, is this practical/a common occurence?

2

https://www.bu.edu/academics/policies/dual-degree-program/

https://www.bu.edu/cfa/current-students/dd-iut/