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Sex may have evolved as a way to pool resources during tough times


Mating Garter snakes

A whole lot of mating garter snakes

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Birds do it, a few bees get to do it – but how did sexual reproduction evolve in the first place? An evolutionary model suggests that it could have started as a way for two cells to pool their resources when favourable environments turn harsh.

“The idea is when times get hard, you fuse with another cell,” says George Constable at the University of York, UK. “Then you’ve got this big cell which has more chance of surviving.”



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