AP Biologymediummcq1 pt
Differential survival of finches with different beak depths during a drought is an example of
A.natural selection on a heritable trait
B.acquired characteristics
C.genetic drift
D.speciation
Explanation
Core Concept
Beak depth is heritable, and hard seeds favored deep beaks during the drought — the Grants documented the population's beak-depth shift within generations.
Correct Answer
Anatural selection on a heritable trait
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