Stardust - one of my most favorite movies "My heart... It feels like my chest can barely contain it. Like it doesn't belong to me any more. It belongs to you. And if you wanted it, I'd wish for nothing in exchange — no gifts, no goods, no demonstrations of devotion. Nothing but knowing you loved me, too. Just your heart, in exchange for mine."
The small amount of DNA in present-day people is the legacy of breeding between the two populations 50,000 years ago - after our species Homo sapiens expanded out of its African homeland and began to colonise Eurasia. Further proof, if it's needed, that Earth was not "created" 6,000 to 10,000 years ago.