Evolution, religion, and ignorance.

[The Valkyrie]

You have to make unwarranted leaps of (logic?) to make sense out of scenarios which can make no sense.
Imagine if the female mentioned before did not have one of the needed parts to create a child. You know that nothing would happen. What would a sole holder of genetic information do when his byproduct had to match that of the female who would be needed to provide the other half of the genetic traits he was giving half of? The biggest impossibility would be that he had any desire to do something about this problem. His drive to be with a woman had not even been developed yet.
Multiply this by every animal that exists and you see that growth of species could never have gone this way. Any other ideas?

There was NO time that there were only male or females of a species.

Genders evolved alongside one another.

Good Grud, how is that complicated?