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My DNA Results – How do they compare to my tree? (Updated)

Screen Shot 2017-05-06 at 5.52.56 PM

Yesterday I shared my ethnicity percentages based on my tree.  They look a little something like this:

  • 62.5% – British Isles (English, Mixed British Isles, Scottish, Welsh)
  • 15.6% – Europe West (French Canadian, French)
  • 9.4% – Scandinavian
  • 6.3% – Some mixture of European Jewish & Italy, Greece
  • 6.3% – Iberian Peninsula (Spanish)

As you can see from my screenshot up there, I have some interesting differences between my tree and the DNA I inherited.  Here is a comparison of my tree ethnicities and my DNA ethnicities.

Ethnicity comparison - Sheet1

The first important note is that those trace ethnicities, 2% or lower, are often considered noise.  In my case, those bottom three surprise ethnicities are not backed up by documentation.  The first six however, are documented, even the 1% Iberian Peninsula.

The biggest surprises for me are these:

  • How little of the French and French Canadian DNA I inherited.
  • How much European Jewish DNA I inherited.
  • How much Italy, Greece DNA I inherited.

John Costello and his ancestors make up 12.5% of my tree.  And yet, I inherited 19% of the three regions he could have contributed – Iberian Peninsula, European Jewish, and Italy, Greece.

And here is where I need to beef up my learning, you see something I read recently caused me to misunderstand a very important point – you inherit 50% of your DNA from each parent, beyond that, it is a random mixture of all that came before them.  I had a handful of paragraphs with some interesting questions and insights into some of the nuances of my tree.  But those questions and insights were based on my misunderstanding, so I chopped them out.  😉  Thank you Deborah for some helpful pointers!  (See her comment below).

I have so much to learn about genetic genealogy.  I need to test my siblings and cousins so I can isolate the various pieces of my DNA and do some fancy-science-y-ultra-nerdy-but-oh-so-cool-DNA-genealogy like this.

While I am still learning, and not completely sure of what my next steps are, the thing I keep coming back to is… How can I be 10% European Jewish when I had no idea I had ANY European Jewish ancestry?  10%.  That’s a lot of percent.  Especially when I didn’t see it coming.

This DNA stuff is oh-so-fascinating.  Have you tested?  Did you find any surprises?

Happy Wednesday, I hope you make a fantastic genealogy discovery today – DNA or otherwise!