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By AnonymMark Stoneking
D.N.A. sequences change by mutations, and the idea behind the molecular clock is that those changes occur at, more or less, a constant rate, over time.
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By AnonymMark Stoneking
Lice have been with us and evolving with us for as long as we have existed.
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By AnonymMark Stoneking
The loss of body hair is interesting to anthropologists, because it is a feature that distinguishes us from our nearest living relatives, chimpanzees. They have body hair, we don't.
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