Certified Texas Contract Manager Practice Exam

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A trait is strongly correlated with survival but is not heritable. What is the most likely evolutionary outcome under natural selection?

The trait will necessarily increase each generation The trait will not show a predictable genetic response to selection The trait will immediately become dominant Mutation will stop in the population

Correct Answer:

The trait will not show a predictable genetic response to selection

Explanation:

Natural selection can favor a phenotype, but evolutionary change requires heritable variation so that favored differences are transmitted to offspring.

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