Evolutionary split of brown bears and polar bears is complicated - Futurity: Research News

Rather than simple splitting events, the evolution of polar bears and brown bears are like those of humans, a tangled story of divergence and interbreeding.

A new study is providing an enhanced look at the intertwined evolutionary histories of polar bears and brown bears. Becoming separate species did not completely stop these animals from mating with e… [+6725 chars]

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