Why is 2 sexes so common in nature?

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The prevalence of two sexes in nature is attributed to the balance between reproductive efficiency and genetic diversity. While some argue that having more than two sexes could enhance mating options, the complexity and reliability of reproduction may diminish with additional sexes. Two sexes facilitate adaptation and natural selection, allowing for the selection of optimal genes and faster evolution, especially in changing environments. Asexual reproduction, while possible, may limit genetic diversity and adaptability compared to sexual reproduction. Ultimately, the two-sex system has evolved as a successful strategy for many species, balancing the costs and benefits of reproduction.
  • #31
Originally posted by StarkyDee
using more than 10% of our brain
We use all of our brain.
 
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  • #32
Originally posted by Tyro
Asexual reproduction IIRC, as described during my biology lectures [zz)] will not produce the same level of genetic diversity as sexual reproduction.

I said:
I'll say this a few more times, because no one seems to have caught onto it yet: You don't need to have two sexes in order for meiosis => recombination to occur.

Sexual reproduction can be done without need of two exclusive sexes. Why are 2 sexes so predominant?
IOW: I am not talking about asexual reproduction.

For a start you may need a more complicated genetic structure
That isn't necessarily true
 

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