Two people reproduced 7 billion people.

[Esquilax]

Not necessarily, no. There's frequently not enough evidence to prove historical events.

I'm thinking genetically.

Provide? Can they prove them? Is there absolute agreement on them?

First question, yes. Second question, why does there need to be absolute agreement? The human race can't absolutely agree on anything. But there are mountains of evidence that have been tested again and again and come out verified, there's a general scientific consensus, and we only ever keep finding more proof of evolution. The disagreement here isn't a scientific one, it's a religious one.

Again, I disagree that proof of historical events is necessarily well within our ability to find, and await your explanation of the evolutionary origin of sexual reproduction and proof of that explanation.

It need not be historical: if all of life sprouted from just two people there would be ample genetic evidence to show this.

I don't have a problem with believing something without proof. That was Esquilax IIRC.

Except that I still have plenty of other proofs of the evolutionary process, like genetic evidence, and the fossil record. We may not have the answer to this single question of sexual reproduction yet, but missing one or two puzzle pieces doesn't suddenly make the puzzle a picture of god because every other piece shows that it's a picture of the evolutionary process. I have a reasonable expectation that the theory will bear out because it has time and time again, and the evidence that proves it points to a world that is very different from the garden of eden origin that you're espousing.