Blind Somali Cavefish Reveals That First Mammal Survived Dinosaurs by Hiding in the Dark

A genetic repair system activated by light turns out to exist in everything from germs to animals – except for mammals and eyeless cavefish in Somalia

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Eyeless fish that evolved for three million years inside caves in Somalia are an unlikely crutch for the theory that early mammals weathered the dinosaur age by going nocturnal. But that is the conclusion from...