Gene Mutation for Milk Tolerance

March 2007
Science Teacher;Mar2007, Vol. 74 Issue 3, p12
Academic Journal
The article reports on a University of Maryland research team, led by scientist Sarah Tishkoff, that studied deoxyribonucleic acid (DNA) of East Africans. Human bodies are not designed to digest milk, and some humans tolerate milk products because of a genetic mutation. Tishkoff's team discovered that the mutation occurred at the historical time when the Africans were raising cattle. Their findings illustrate the connection between genetic mutations and lifestyle.


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