Suppose that several flies of a population that previously fed on blueberries start to feed on honeysuckle. Due to genetic differences that accumulate as the flies adapt to feeding on honeysuckle, these "honeysuckle" flies eventually breed earlier than the ancestral flies. This change most likely represents an early stage of speciation brought about by
A) a geographical barrier.
B) an ecological barrier.
C) genetic drift.
D) adaptive radiations.

Question

Quizplus · Accepted Answer

The change in feeding habits and breeding times due to adaptation to a new ecological niche (honeysuckle) represents an ecological barrier, leading to reproductive isolation and potentially speciation.

Suppose That Several Flies of a Population That Previously Fed