Friday, February 1, 2013

How wolves evolved into man's best friend

How wolves evolved into man's best friend - The Week: " . . . . Combing through the genomes of 60 domestic breeds — including golden retrievers and cockerspaniels — Swedish researchers discovered that dogs have a much easier time converting starches into glucose than modern wolves. This means that at some point in dogs' evolutionary history, packs of wild canids struck up a mutually beneficial relationship with early humans, and learned to subsist on people food — stuff like wheat, barley, corn, rice, and potatoes. In exchange, man earned himself a loyal friend and fierce protector.  "I think it is a striking case of co-evolution," Erik Axelsson, a geneticist at Uppsala University, tells the Washington Post. "The fact that we shared a similar environment in the last 10,000 years caused a similar adaptation. And the big change in the environment was the development of agriculture.". . . "

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