A)mutant flies are identified by morphology and then the mutant genes are isolated and studied.
B)mutant flies are created by RNAi using random RNA sequences and then the genes affected identified.
C)mutant flies are created by gain-of-function expression of random genes.
D)two mutant flies are mated to determine if there is an effect on morphology.

A)ease of cultivation
B)rapid reproduction
C)small size
D)small genome

A)It has kinase activity.
B)It is a membrane bound receptor.
C)It is a secreted protein.
D)It is a transcription factor.