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DNA strand

A group of scientists in the UK have proved that healthy human beings have a surprising amount of mutated DNA, reinforcing the old adage that "nobody's perfect." The fact that humans carry mutated DNA isn't a new concept, but a research paper just published in the American Journal of Human Genetics showed that the average person has an average of 400 defects in his or her genes, including at least a few associated with disease. "We found quite amazingly large numbers of deleterious and known disease-causing mutations," Chris Tyler-Smith of the Wellcome Trust Sanger Institute in Cambridge, England told NPR. He went on to note that previous estimates "ranged from just a handful up to 100 or more serious disease-associated mutations" —...

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