A human, an octopus, and a coral could hardly look more different—yet deep inside their cells, their chromosomes still carry recognizable pieces of a genome inherited from an animal ancestor that lived more than 600 million years ago. Since then, their chromosomes have fused, split and rearrange...

Source: [Phys.org](https://phys.org/news/2026-08-animal-genomes-irreversible-evolutionary-highways.html)

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