What did fruit fly studies of the for gene demonstrate?
Mutant Fruit Fly. Fruit flies have a very simple genetic structure, which makes them ideal for genetic research. It is useful to study mutant fruit flies, as their quick reproduction rate allows scientists to observe the advantages and disadvantages of certain mutations.These fruit flies are also helpful in determining whether certain stimulants cause mutation.t is useful to study mutant fruit flies, as their quick reproduction rate allows scientists to observe the advantages and disadvantages of certain mutations. These fruit flies are also helpful in determining whether certain stimulants cause mutation.