Klinefelter syndrome was only diagnosed for the first time in 1942 but now a Portuguese skeleton from the 11th-century AD has been found with the same genetic signature.
A group of international researchers has uncovered evidence of a super rare genetic condition that gives men an extra X chromosome, reporting the oldest clinical case of Klinefelter syndrome to date. The evidence comes from a 1,000-year-old.
DNA extracted from the 1,000-year-old skeleton reveals the man had Klinefelter syndrome, which is a super rare genetic condition that gives men and extra X chromosome.
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Neanderthal DNA extracted from cave dirt shows population movements 100,000 years ago
Posted 1
AprApril 2021 at 6:00pm
From ancient Neanderthal DNA extracted from cave dirt, researchers could ascertain if the individuals it belonged to were male or female.
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Some 100,000 years ago, deep in a cave in what is now northern Spain, a Neanderthal female lived and maybe died.
Key points:
Researchers developed a technique to extract and analyse DNA from cave sediments
The method can help archaeologists piece together patterns of human migration stretching back hundreds of thousand of years
She may have been alone, or perhaps accompanied by sisters or a daughter. But she certainly wasn t the first of her species to be there not by a long shot.