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Wait a second, I though these companies didn't sequence DNA. I thought most of them just ran your DNA against known patterns to see if they patch to give you a probably/percentage of ancestry, with all the original samples being destroyed:

https://www.youtube.com/watch?v=U3EEmVfbKNs

Does ancestry actually sample and save entire DNA sequences (I guess they have to in order to do family tree matching)?

Crazy.



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