SAT Subject Biology Practice Question 354: Answer and Explanation

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Question: 354

4. All of the following could give rise to new species EXCEPT

A. variations in antler size between male and female reindeer
B. an earthquake that physically separates a population of lizards into two separate groups
C. divergent evolution
D. evolution of a population of cats such that they can no longer mate with their ancestors
E. a massive flood that separates a population of frogs onto opposite sides of a large lake

Correct Answer: A

Explanation:

A The defining characteristic for speciation is an inability to interbreed. Choices B, C, D, and E could all ultimately produce two different populations that lack the ability to mate. Choice A would not lead to an inability to mate. Remember this is a LEAST/EXCEPT/NOT question.

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