The article states that European royal houses are all closely related. Well in humanities history it’s thought that over 80% of all marriages were between second cousins or closer. While until the industrial revolution the nobility would have been the only demographic who could travel further than as far as you can walk from your home and back in a day. So until the industrial revolution the nobility were probably the most genetically diverse demographic.
‘Virgin births’ happen in nature more than we thought, says Frank Swain, so what’s stopping human beings from doing the same?