Thursday, April 11, 2019

What Those DNA Tests Really Show




https://www.forbes.com/sites/jenniferraff/2019/04/09/genetic-astrology-when-ancient-dna-meets-ancestry-testing/#544b604b6c69

Jennifer Raff makes these points:
  1. Your DNA is not a good snapshot of your whole family tree more than a few generations back. You have many more genealogical ancestors than you have genetic ancestors.
  2. Any given individual in the past (including all of the ancient people referenced in the Primeval DNA test) is extremely unlikely to have passed along their DNA to anyone, including you.
  3. Any person in the distant past—be they anonymous peasant or famous monarch—who passed on their DNA into present times might be your ancestor, but he or she will also likely be the ancestor of everyone else in the world. In other words, as geneticist Dr. Adam Rutherford explained in his post on the subject for The Guardian, “we are all special, which means none of us are.”

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