Late last year Ancestry.com announced an update to their DNA ethnicity results. And, based on the changes in my test results, it was no minor thing.
My ethnicity when my DNA results first were posted on Ancestry.com:
|My DNA ethnicity before the latest enhancement|
My ethnicity after the update:
|My DNA ethnicity after the latest enhancement|
We all know we get half our DNA from each parent, and they got their DNA from their parents, and so on. Our DNA is essentially a map of our ancestors. When Ancestry.com tests your DNA, they compare it against a reference library of DNA from people with deep roots in a particular geography. In a nutshell, Ancestry.com increased the size of that DNA reference library, which enabled them to provide customers with more precise and granular ethnicity results. There are now 26 overlapping worldwide regions based on DNA patterns in the reference library. They have also increased the number of separate analyses during DNA testing to 40.
|Ancestry's 26 worldwide ethnicity regions|
To learn more, I encourage you to read this blog post, Unraveling the Science Ethnicity Estimates or watch this video.
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