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Results tagged with natural-selection
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user 239
A mechanism of evolution that leads to non-random spread of genes due to the effect that genes have on reproductive success.
22
votes
Accepted
Why do only two sexes exist for animals?
To get a non-circular answer to why humans and other mammals have only two sexes, it's helpful to take a look at our evolutionary history. While mammals possess several adaptations to a terrestrial l …
6
votes
Accepted
Is Natural Selection like a Copy Editor?
Is natural selection like a copy editor?
Is a railway car like a weasel?
Honestly, I don't think that's a very good question. The only reasonable answer is, put briefly, "In some ways it is, and in …
13
votes
What is the difference between the evolution of fins in whales and fish?
I agree with you that the question is ambiguous, and also that the most sensible answer would be C. However, one could make a more or less reasonable argument in favor of several other answers, too.
…