Apentix/AP Biology/Unit 7: Natural Selection/Question
AP Biologyeasymcq1 pt

Human birth weight clusters around an intermediate optimum because

A.stabilizing selection removes the extremes
B.directional selection favors large babies
C.disruptive selection splits the population
D.birth weight is not heritable

Explanation

Core Concept

Very small and very large babies survive worse, so the middle of the distribution is favored generation after generation — variance shrinks around the optimum.

Correct Answer

Astabilizing selection removes the extremes

More Unit 7: Natural Selection practice questions

Try a random question →

Practice more AP Biology questions with full explanations

Practice Unit 7: Natural Selection Questions →