Question

Which of the following is NOT a good reason to use fruit flies (Drosophila melanogaster) in a genetics study?
Responses
A Fruit flies have a short generation time.Fruit flies have a short generation time.
B Fruit flies are easy to care for.Fruit flies are easy to care for.
C Fruit flies have very large chromosomes to study.Fruit flies have very large chromosomes to study.
D Fruit flies have genetic traits that are easy to observe.

Answer 1

C

Fruit flies do not generally have very large chromosomes — their chromosomes are small, though their salivary gland polytene chromosomes are unusually large. The usual reasons to use Drosophila are short generation time, ease of care, and easily observed genetic traits.