During a drought on the Galapagos islands, finches with larger beaks were able to crack the large tough seeds produced by plants that survived the dry conditions.This is an example of ____.
A)genetic drift
B)a founder effect
C)stabilizing selection
D)directional selection

Question

Quizplus · Accepted Answer

Directional selection occurs when environmental pressures favor one extreme phenotype over others, leading to a shift in the population's traits. In this case, the drought favored finches with larger beaks, shifting the population towards this trait.

During a Drought on the Galapagos Islands, Finches with Larger