A relatively higher mutation rate in African humans is the dominant mechanism causing Neanderthals to appear closer to non-Africans, not introgression

Bill Amos
It is widely thought that humans carry genetic legacies due to inter-breeding with Neanderthals, but all methods used to infer legacies ignore recurrent mutations and assume a constant mutation rate. These assumptions cause automatic rejection of a second hypothesis, where a higher mutation rate in Africans caused increased divergence from Neanderthals. Any fair test should strive to treat both hypotheses equally. Here I use mutation spectra, the relative frequencies of different mutating three-base combinations, to...
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