All three theories about the origins of sex focus on damage-limitation: sex protects against 1) harmful mutations 2) pathogens 3) and now, trasmissible cancershttps://twitter.com/NicoleBarbaro/status/1137824484298231808 …
If I could answer that question, I'd publish it and win prizes.
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Surely it's that sex enables organisms inherit traits from many ancestors. Within a population, some will draw winning hands: inheriting new combinations of beneficial traits while avoiding genetic damage. These genetic winners soon become the demographic winners.
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I expect that's an oversimplification, but it makes sense to me.
End of conversation
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