What color is a monkey if you shave it?
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So maybe light skin wasn't evolved? It's an absence of a characteristic. Dark skin was only needed for some humans after body hair was shed/reduced (whatever is the evolutionary term for unneeded characteristics disappearing) and thus selected for.
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Why are you not reading the paper and trying to guesswork on Twitter?
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$31.5 Text too difficult to be understood TLDR; Why type anything on Twitter?
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Use Scihub like normal people.
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Interesting. Refutes Darwin's sexual selection hypothesis no?
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Some reviewers did note that, but their treatment of it seemed emotional (judging by language used), so I don't trust their judgment for now.
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A theory on the spread of the recessive blue eye mutation was so the father knew he was pouring resources into his own biological offspring and not some interloper’s. Which explains much of the racial resentment/xenophobic drive at the same time.
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Would require people to understand mendelian inheritance, no?
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Perhaps there’s something to the word “fair” meaning both light skin *and* sexually attractive? What if white skin’s not only energy-sparing adaptive evolution, but also example of fair Fisherian Sexual Selection rearing her blonde-haired blue-eyed head? https://twitter.com/i_aver/status/963296402255241217?s=21 …pic.twitter.com/rPbB1quiBk
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That's what Peter Frost has been arguing for years.
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Aha, a search reveals this. Makes sense, and yet ppl cling to adaptive evolution explanations such as Vit D, which doesn’t. https://onlinelibrary.wiley.com/doi/abs/10.1002/ajpa.20555 …
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Well, you wouldn't evolve it for skin cancer protection, that's dark skin. And I think there is enough threat of skin cancer in Africa, even among young people, to push for darker skins there.
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An experiment in selective breeding for domestication turned foxes from black to white. The genesis of light skin is associated with the rise of argiculture and herding. Hunter gatherers retained darker skin tones.
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Saving on redundant pigment seems like an adequate explanation which also goes some way toward explaining why this adaptation did not take place in other populations inhabiting higher latitudes.
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