Answers AFC AP Biology B3Introduction to Natural Selection

Introduction to Natural Selection Answers

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Which statement best describes Darwin’s theory about evolution?

An organism’s traits remain constant from one generation to the next.

Traits only become prevalent in a healthy population randomly.

Variation naturally exists, and advantageous traits become more prevalent over time in a population.

Variation naturally exists, and environmental change does not impact genetic variation in a population.

How did different island environments affect Galápagos finch populations over time?

The entire finch species became extinct.

The finch species adapted by increasing their height.

New species of finch formed with varying beak sizes.

Migration patterns changed, affecting finch reproductive rates

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