Assignment task: Explain the "fruitless" manipulation studies in fruit flies:
A. Where is the gene expressed?
B. What happens if it is knocked out?
C. Is it present in male and females normally? If not, then why might its expression account for sexual dimorphism in mating behaviors?
D. How was this experimentally tested?
E. What behavior(s) did the gene and neurons it is expressed in, specifically drive in the fruitfully?