Many organisms are studied by geneticists. Of the following species, do you think it would be more

Question:

Many organisms are studied by geneticists. Of the following species, do you think it would be more likely for them to be studied by a transmission geneticist, a molecular geneticist, or a population geneticist? Explain your answer. Note: More than one answer may be possible.
A. Dogs
B. E. coli
C. Fruit flies
D. Leopards
E. Corn