our ancestors and even those not closely related to us were horny as interbreeding was common. Studies with DNA, and make up of proteins in humans today are leading us to see just how complex our tree of life is. We all came out of Africa as we all hear the term "We are all Africans" a lot but just how diverse we are is utterly amazing.
http://www.foxnews.com/science/2017...ble-clue-to-ancient-ghost-species-humans.html
http://www.foxnews.com/science/2017...ble-clue-to-ancient-ghost-species-humans.html
