It is much less prevalent in people of African descent, the scientists said.
2
借着火光，我发现医师和另一个人有着共同的非洲人种特征—深褐色皮肤、扭结的头发和宽阔的鼻子。
By the fire I notice that the medic and another man bear the common ethnic features of the African interior-dark brown skin, kinky hair, and broad noses.
3
非非洲人1%至4%的基因与在尼安得特人身上发现的基因相匹配，于是要分清其人种属性就好困难。
Between 1 and 4 percent of the genes of non-Africans match those found in Neanderthals, making it difficult to draw the species line.
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