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Genetic Linkage

Ground Control to Major Scott: The Genetics of NASA’s Twins Study:

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When the Today Show reported on March 15 that the DNA of Scott Kelly, who spent a year on the International Space Station while identical twin Mark stayed earthbound, had changed in space, you’d think he’d returned bearing the genome of a rutabaga compared to that of his boringly human terrestrial twin.

NASA’s several webpages of information on the Twins Study offered just one sentence about changed genes – and most of the rest, about gene expression, was widely misinterpreted in the media. Read More 
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