uniparental disomy
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Over 150,000 Americans Have Rare DNA Fluke And Don’t Know It, Study Of 23andMe Data Finds
A supposedly rare genetic quirk might be more common than we think, according to new research out Friday. The study, based largely on 23andMe data, suggests that one in every 2,000 people are born with two copies of a gene from only a single parent, often with no serious health consequences.