In sexual reproduction, only half of each parent's genes are passed to the next generation. What's more, a mate must be found. Yet sex persists.

So if something's ultimate purpose is to serve that role the playing of which led evolutionarily to its existence, then, yes, sex is ultimately for reproduction. This is true, i think, even though this notion of … Although not exhaustive, the current review aims to synthesize and explore this issue and ideas based on some of its arguments including the generation of sex differences, the molecular basis for sex, and … Sexual species have to find a mate, fight off rivals, and risk catching sexually transmitted diseases. Finally, if sex is so beneficial, why is it that bacteria and archaea never evolved it,

Finally, if sex is so beneficial, why is it that bacteria and archaea never evolved it,