https://www.newsweek.com/y-chromosome-disappear-soon-humans-men-extinct-1763123
The Y Chromosome Is Going To Disappear, Scientists Say
The male Y chromosome has disappeared from a species of rat, leading scientists to investigate how humans might also lose ours in the near future.
It's not all bad news for men though, as a paper published in the journal PNAS by scientists at Hokkaido University in Japan has discovered why this might not signal the end of males.
Humans have 23 pairs of chromosomes, one pair of which are the sex chromosomes. In biological females, there are two copies of the same type, giving them the genotype XX, while males possess a second, shrunken chromosome referred to as the Y chromosome, giving them XY.
"The mammal Y is a weird little chromosome with hardly any genes on it and a lot of DNA junk. But one of these genes is SRY, the male-determining gene," Jenny Graves, a sex chromosome geneticist at La Trobe University in Melbourne, Australia, told Newsweek
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