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单选题
The text supplies information for answering which of the following questions?
A

Why are Japanese starry flounder mostly left-eyed?

B

Why should the eye-sidedness in starry flounder be considered selectively neutral?

C

Why have biologists recently become interested in whether a characteristic is adaptive or selectively neutral?

D

How do the eyes in flatfish migrate?


参考答案

参考解析
解析:
细节题。原文第四段的首句提到 The problem with the above explanation is that the Japanese starry flounder population is almost exclusively left-eyed, and natural selection never promotes a purely less advantageous variation.,即作者认为这种解释的有问题。此外第三段的尾句和第四段的第二、三句也暗示了本题答案是B项。
更多 “单选题The text supplies information for answering which of the following questions?A Why are Japanese starry flounder mostly left-eyed?B Why should the eye-sidedness in starry flounder be considered selectively neutral?C Why have biologists recently become interested in whether a characteristic is adaptive or selectively neutral?D How do the eyes in flatfish migrate?” 相关考题
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