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In Darwin's Sacred Cause, Adrian Desmond and James Moore contend that "Darwin would put his utmost into sexual selection because the subject intrigued him, no doubt, but also for a deeper reason: the ...
RIVERSIDE, Calif. — Sexual selection refers to species selection for traits that are attractive to the opposite sex. This special type of natural selection enhances opportunities to mate, the tail of...
WITH animals which have their sexes separated, the males necessarily differ from the females in their organs of reproduction; and these are the primary sexual characters. But the sexes often diffe...

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