Why are their two sexes?

Question

The vast majority of fauna have two sexes. Why aren’t more animals hermaphrodites?

In: 0

Answer 1

because two is the least complex amount that is also bigger than one; evolution tend to take the easiest path, hermaphrodity is seemingly more complex to make it work in the same organism; and there are plenty of other advantages; by seperating 2 genders, you allow those two to gain specific strenghts better adapted to their niche, 2 genders co-evolve to carry 2 sets of different adaptations.

when you look at the environment, nearly all of the 2 gendered species also carry physiological differences from each other, so the evolutionary benefit for complex body structures is surely there.