Canine breeds are determined by surprisingly small number of genes

01/22/2012 | National Public Radio

Research on dog DNA by scientists at Cornell, UCLA, Stanford and the National Institutes of Health concludes that there are only a few genes controlling all the variations among dog breeds, versus humans who have a very complex genetic expression. It's this relative simplicity that allows people to breed for specific traits in their canine companions, often leading to new breeds.

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