Question

Darwin noticed that finches in the Galapagos islands all had similar appearances, yet had some subtle differences. Examples of the differences were coloration, beak size, and other similar adaptations.

Which of the following would be reasons for these adaptions?

A
Mating and living in different latitudes
B
Gathering water and living in different temperatures
C
Mating and food source
D
Food source and living in different temperatures

Answer 1

C

Beak differences evolved mainly because of different food sources (natural selection for feeding efficiency), while coloration differences are often driven by mating/sexual selection.