Re: Expected to find Jamaican DNA
John, Do you have any connections with Devon? If so you can join the Devon DNA Project and I can look at your results. You only have around 12.5% of your DNA from your great-grandfather and even if he was half-Jamaican this might not show up in a DNA test purely because of the random way in which DNA is inherited. Therefore, the test does not show that you are not related by blood to your Jamaican relatives. Can you test any other close relations in Jamaica to see if they share the expected amount of DNA for the cousin relationship?
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