Scientists found that different beak shapes correlate with different mating songs in Darwin's finches.Which hypothesis does this support?
A)Darwin's finches are not different species according to the Biological Species Concept.
B)Adaptation to different food sources led to behavioral isolation in Darwin's finches.
C)Mating songs are primarily determined by the acoustics of different beaks.
D)Adaptation to different food sources likely occurred after reproductive isolation in Darwin's finches.

Question

Quizplus · Accepted Answer

The observation that different beak shapes correlate with different mating songs suggests that behavioral isolation has occurred in Darwin's finches due to adaptation to different food sources. The finches developed different beak shapes to exploit different food sources and this led to the development of different mating behaviors, which maintained reproductive isolation between the different groups of finches. This supports the hypothesis that adaptation to different food sources led to behavioral isolation in Darwin's finches.

Scientists Found That Different Beak Shapes Correlate with Different Mating