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Can a DNA results from a saliva test be used to more accurately identify ancestry?

Asked by metadog (378points) May 16th, 2016

Results from a DNA vendor like provide some very interesting ancestral origin information. But it is very broad (you are 40% German/French 10% Italian, etc). Can the downloaded results from one of these tests be used to get more specific information? There are databases you can upload to for more specific health info, is there such a thing to narrow down ancestral origins?

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