23andMe for Medical Professionals – …2017/12/15  · lighter skin probably appeared at least...

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Transcript of 23andMe for Medical Professionals – …2017/12/15  · lighter skin probably appeared at least...

Page 1: 23andMe for Medical Professionals – …2017/12/15  · lighter skin probably appeared at least twice in human history, during two separate migrations out of Africa: one to Europe,