[Featured]: The Earliest Known Animal Sex Chromosome is 480 Million Years Old | Scientific American

[octobot]

The octopus sex chromosome appears to have been maintained over hundreds of millions of years, making it the most ancient of such chromosomes in ...

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[Marinalk]

The octopus sex chromosome appears to have been maintained over hundreds of millions of years, making it the most ancient of such chromosomes in ...

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Great article!!! Thank you for posting.