Extra gene copies were enough to make early humans' mouths water

To think that world domination could have begun in the cheeks. That's one interpretation of a discovery, published online September 9 in Nature Genetics, which indicates that humans carry extra copies of the salivary amylase gene.

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<p><a href="http://www.physorg.com/news108572275.html">Extra gene copies were enough to make early humans' mouths water</a></p> <p>To think that world domination could have begun in the cheeks. That's one interpretation of a discovery, published online September 9 in <i>Nature Genetics</i>, which indicates that humans carry extra copies of the salivary amylase gene.</p>