Which of the Following Statements Was Initially a Disadvantage of Using

Multiple Choice

Which of the following statements was initially a disadvantage of using the fruit fly for genetic studies?

A) They have a short generation time from egg to maturity.
B) They produce up to 1000 eggs in a lifetime.
C) They are easy to house and breed.
D) There was only one strain of flies available.
E) They are inexpensive to maintain.