Fears men could eventually ‘die out’ as Y chromosome is vanishing over time

Fears men could eventually ‘die out’ as Y chromosome is vanishing over time
Leonardo da Vinci: Vitruvian man

[Ed. – Democrats must be rejoicing.]

The Y chromosome could be dying out, prompting discussion of whether men could disappear with it.

A person’s sex is determined by whether they have two X chromosomes (which causes ovaries to develop) or an X and a Y (which results in testes).

Of the two, X has approximately 1,000 genes while Y has just 45 and research suggests the Y chromosome is gradually shrinking even further.

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Genes develop mutations over time, some of which are harmful. Chromosome can avoid passing on such harmful mutations by mixing and matching with each other during meiosis — the stage of foetal development during which our forming bodies develop sperm or eggs.

This process breaks up the genes and makes it more likely that only strong, non-harmful ones get passed on.

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