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Worm-eating mice reveal how evolution works on islands

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Worm-eating mice reveal how evolution works on islands
Australia has a bunch of kangaroo species, Madagascar has multiple species of lemurs, the Galapagos Islands have boulder-sized tortoises—islands get lots of cool animals. That's because when animals are isolated on islands, they can evolve into strange new species found nowhere else on Earth. But what's the cut-off—how small can an island be and still support the evolution of multiple new species from a single common ancestor? A team of mammalogists just discovered that four species of mice evolved from one common ancestor on Connecticut-sized Mindoro Island in the Philippines, making it the smallest known island where one kind of...
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