This more recent discovery that during sexual reproduction the germ cell chromosomes bind to their partners with a different method than that used by the other apes definitely raised questions about how we ended up having some of our genes in common.
There are undoubtely ways other than sexual reproduction to acquire genes from other critters. We just don't know them yet. When we do I think our ideas about life's origins will change more than dramatically.
Remeber that old saw: the more I know the more I know I dont know. Whatever makes us, US is still largely a mystery. No wonder the sci fi folks float the idea that our seed was planted by aliens. We are THAT different from other critters