News of the WeekHUMAN EVOLUTION

There's More Than One Way to Have Your Milk and Drink It, Too

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Science  15 Dec 2006:
Vol. 314, Issue 5806, pp. 1672
DOI: 10.1126/science.314.5806.1672a

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Summary

In this week's issue of Nature Genetics, researchers describe three new genetic variants that arose independently in groups of Africans; each variant allows carriers to drink milk and eat dairy products as adults. The study shows that lactose tolerance evolved more than once in response to culture. (Read more.)