I must admit I find this a little improbable too. Granted Europeans have spread their genes everywhere in the last five hundred odd years, and the Arabs and Chinese have gotten around pretty good too, but it's really difficult to believe that *every* Native American, Aborigine and Sub-Saharan African has *recent* European or middle Eastern ancestry and it would have to be recent since those populations were effectively isolated from Eurasia up to five hundred or so years ago, (two hundred for the Aborigines and maybe one hundred for central Africans).