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Genetic scientists explore how centuries of breeding have altered dogs' DNA

• Washington Post
Dog genes that code for such signature pet traits as the furrowed skin of the Shar-Pei have been identified in a study that shows how centuries of breeding gave rise to 400 kinds of domestic dogs.

Researchers analyzed the genes of 275 dogs in 10 breeds to see how breeding practices have altered their DNA, the hereditary template in their cells. The results, reported last week in the Proceedings of the National Academy of Sciences, show that some conspicuous physical traits, or phenotypes, such as height and coat color, can be traced to particular genes of beagles, border collies, dachshunds and poodles, among other breeds. 

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