Nasa astronaut twins Scott and Mark Kelly no longer genetically identical after space trip
Nasa astronauts Scott Kelly and his identical twin brother Mark have shared a lot throughout their extraordinary lives. Born just a few minutes apart, the pair were both US Navy captains, both flew on the Endeavour and Discovery space shuttles, and both spent time on board the But new findings by Nasa have found that life away from planet Earth has exacted a surprising toll. The pair are no longer genetically identical twins./ , experts found that seven per cent of his genes no longer match those of brother Mark. Scott may even now be ...
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