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Ancestry vs Ancestry test results different

I’ve been working on my family tree using Ancestry for several years now and have made some discoveries through them. I recently took the Ancestry DNA test and the results came back very different than what I was expecting given what I know for a fact is true. My mother’s father was 100% British, born in England, as were all of his ancestors. Wouldn’t that alone make me approximately 25% Great Britain? In addition, I know on my father’s side that his father’s father’s mother’s family all came from Scotland. My Ancestry DNA test results were 66% Western European, 25% Irish, 6% Great Britain, 3% trace regions (Scandinavia, Finland). I had expected my percentage from Great Britain to be around 40%. Are these tests ever wrong? Should I take another type of test? Or should I have my mother, father and/or brother take an Autosomal test or another type of test? Thank you for any help you can give me!

-Kelly

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Sally Jones
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Sally Jones

Hi Kelly,

Yours is an example of how fascinating each person’s DNA is. As you know, each person’s DNA is different and that includes the percentage of ethnicity they inherit from each parent, grandparent, etc. It would be interesting to see what your brother’s, mother’s and father’s results show. But it’s important to understand that today’s DNA Ancestry tests are still evolving and improving in terms of how they search for certain genetic markers and which ones they search for. I hope this helps!

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