If you are unsure about all the facts surrounding DNA testing to prove the origins of your family tree, you need to read Sunny Morton’s interview of DNA expert Diahan Southard published in the LDS Living web site at: http://bit.ly/2Z8k0Uk.
It will be time well spent.
One comment: Read carefully section #2: How accurate are those ethnicity results?
“Ethnicity results are the most popular feature of DNA testing. However, they’re also the weakest part of the test, scientifically speaking. The good news is that ethnicity results are gradually getting more accurate and more specific. These changes sometimes cause confusion, though.”