SAT Subject Biology Practice Question 91: Answer and Explanation

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Question: 91

1. Which situation describes an incidence of artificial selection acting upon a single population?

A. Weak prey animals successfully hunted by predators
B. Excessive rains providing additional water resources
C. Males choosing the healthiest females to reproduce with
D. An early warm front resulting in premature plant blooming
E. Insecticides eliminating all crop pests except resistant individuals

Correct Answer: E


Artificial selection is any selective pressure acting on a community or population that is not natural. A nonnatural condition can severely affect population demographics.

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