Once you feel you have figured out these DNA puzzles, here’s another: those of us with European ancestry have about one and a half percent Neanderthal DNA, which is about as much DNA, on average, as you would get from one fourth great grandparent, six generations back.  But the Neanderthals died out around 40,000 years, or roughly 160,000 generations, ago.  How do you explain this?
Jeffrey Herrmann
New Rochelle, NY