Getting to the root of enamel evolution: Connecting genes to hominin teeth shows evidence of natural selection

Thick tooth enamel is one of the features that distinguishes our genus, Homo, from our primate relatives and forebears. A new study offers insight into exactly how evolution shaped our teeth, one gene at a time. By comparing the human genome with those of five other primate species, a team of geneticists and evolutionary anthropologists has identified two segments of DNA where natural selection acted to give modern humans their thick enamel.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/health_medicine/dentistry/~3/pKvL-3gpEtQ/140505155349.htm

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