Initially, Rosbash was interested in mathematics but an undergraduate biology course at the California Institute of Technology (Caltech) and a summer of working in Norman Davidson’s lab steered him towards biological research.
Ursprungligen var Rosbash intresserad av matematik men en grundkurs i biologi vid Caltech Institute of Technology (Caltech) och ett sommararbete vid Norman Davidsons laboratorium styrde honom mot biologisk forskning.