The Hawthorne and apple maggot flies appear to have become reproductively isolated from each other largely because they:
A) have different mating behaviors.
B) mate at different times of the day.
C) have adapted to two different hosts.
D) occupy different parts of the habitat.
E) do not share the same reproductive organs.

Question

Quizplus · Accepted Answer

The Hawthorne and apple maggot flies have become reproductively isolated primarily because they have adapted to two different hosts (Hawthorne trees and apple trees, respectively). This adaptation to different host plants affects where they live, feed, and lay eggs, leading to reproductive isolation over time.

The Hawthorne and Apple Maggot Flies Appear to Have Become