"Blue eyes have their hue because of a single genetic mutation that occurred fewer than 10,000 years ago in one individual and swept rapidly through the European population, according to a study published in the journal Human Genetics in January.
After studying some 800 individuals from Denmark, Turkey, and Jordan, the researchers pinpointed a single base-pair change in the human genome that showed up in all the blue-eyed people and none of the brown-eyed people. “There was one founder mutation that gave rise to all the people in Europe who have blue eyes,” says report coauthor Jesper Troelsen, a University of Copenhagen molecular biologist. “It was quite surprising.”
From Discover
So sing it for us Mrs. Gayle!
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