One in 500 men may carry an extra sex chromosome (most without knowing it)

Up to one in 500 men may carry an extra sex chromosome — either an X or a Y — but very few of them are likely aware of it, a new study finds.

The research, published June 9 in the journal genetics in medicine (opens in new tab), comprised data from more than 207,000 men who submitted information to the UK Biobank, a collection of genetic and health data from half a million UK-based participants. Typically, males carry an X- and a Y-shaped gender chromosome in each of their cells, but among the study participants there were 213 men who carried an extra X chromosome and 143 who had an extra Y chromosome.

https://www.livescience.com/men-with-extra-sex-chromosomes-study One in 500 men may carry an extra sex chromosome (most without knowing it)

Russell Falcon

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