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Why have sex?
... male and just makes all female progeny. Georgia - Key to Darwin's theory of natural selection is survival of the ...
Why don't women have beards?
... is to do with sex or selection. This is the second of Darwin's great mechanisms, that selection doesn't just work ...
What is the purpose of sexual reproduction ?
... are more likely to be passed on. This is the basis of Darwin's theory of evolution and the mechanism by which it ...