Y chromosome Disappearing 2024: Is humanity heading towards its end?

Two rodent branches have already lost their Y chromosome and survived, which is good news. A 2022 study that showed hope for humankind’s future claims that the spiny rat has successfully created a novel gene that defines maleness.

The Y chromosome’s master gene, referred to as SRY (sex-determining region Y), triggers a genetic process that results in the development of male reproductive organs about 12 weeks after conception.

Luckily, two rodent lineages have already lost their Y chromosome and are still going strong: the spiny rats of Japan and the mole voles of Eastern Europe.

If someone were to come back to Earth in 11 million years, they might not see people the way we do. Rather, they may come across multiple distinct human species, each distinguished by its sex-determination mechanism.

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