Changing environments level evolutionary playing fields

Where you grow up has a lot of influence on you, even if you are a bacterium. But when it changes, it makes life—and evolution—a lot more random.

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How growth freezes change (in bacteria)

When we think of evolution, we think natural selection, survival of the fittest. But that’s not all. Primal forces lurk work in the background. When selection disappears, they finally break free.

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