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The impact of a lost twin is huge!

How can a man who was never born father a son? When the ghost of his genes lives on in the DNA of his brother, genetics researchers have found. A 34-year-old U.S. man is the first-ever reported case of a paternity test fooled by a human “chimera” — someone with extra genes absorbed from a nascent twin lost in early pregnancy. About 1 in 8 single childbirths are thought to have started as multiple pregnancies. Cells from these miscarried siblings are sometimes absorbed in the womb by a surviving twin — but are only rarely discovered by surprises such as the paternity-test puzzle. “Even geneticists are blown away by this,” Barry Starr, a geneticist at Stanford University, told BuzzFeed News. T

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© 2015 by Orianne Corman

 

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