Question

arwin 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 size differences are primarily adaptations to different food sources (seed size, insects, cactus, etc.), while coloration differences are often shaped by sexual selection (mating). The other options (latitude/temperature or gathering water) are not the main explanations for Darwin's finch variation.