Organize Your Family History

Stay focused and happy while exploring your roots

New ABC show: The Genetic Detective

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I’m excited to watch The Genetic Detective, on ABC, premiering a week from today, on May 26. (It was originally slated to premiere tonight.) This documentary program follows investigative genetic genealogist CeCe Moore, Chief Genetic Genealogist at Parabon NanoLabs in Virginia, as she works with law enforcement to solve tackle criminal cold cases using DNA. In the premiere, she tackles her first-ever cold case.

Here’s a video from the show’s Facebook page:

I’ve heard CeCe speak more than once at genealogy conferences and of course seen her on Finding Your Roots. She’s a dynamic speaker and obviously very knowledgeable.

She looks fascinating. I think it’s very cool to see a show about genetic genealogy–not just using DNA but traditional genealogy as well–in a prime-time slot on a major network!

Will you be watching?

Fun with ethnicity estimates

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I had my DNA tested by Ancestry a few years back and I’m just now figuring out how to use it in my genealogy research. I found the ethnicity estimate interesting. And then I found it even more interesting when Ancestry updated its estimates.

My brother, Larry, lives in Australia and when he visited recently he agreed to submit a sample. I was curious about how ours would compare, in terms of ethnicity. I was also curious to see what migration group was provided to him. (I was given North Alabama Settlers.)

When I first asked him, Larry’s response, “Don’t we have the same DNA?” I responded that while our DNA comes the same sources (half from our dad and half from our mom), what we get from each of them is different so our ethnicity results might be different.

The results arrived yesterday and I was tickled to see that there were what looked to me like some fairly large differences. Here’s a screenshot of our two results side by side:

 

As you can see, I have a higher percentage of Irish ancestry showing up in my results (41% vs 34% in Larry’s) and his results show 8% Germanic Europe, where I have none. I have a smidge of Greece and the Balkans and he has a smidge of Sweden. Fun stuff!

Oh, and the migration group provided to Larry was Lower Midwest and Virginia Settlers.

Have you compared ethnicity results with a sibling? I’m curious how different your results were.

Ancestry DNA updates its ethnicity estimates

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On September 12, Ancestry DNA debuted its “enhanced” ethnicity estimates based on a much larger reference sample (16,000 versus 3,000 reference samples) and improved algorithms. Blaine Bettinger, The Genetic Genealogist, has a great blog post explaining it.

Comparing my own older and newer ethnicity estimates, fewer ethnicities are represented. My percentage Irish/Scottish has gone up and my percentage Scandinavian has gone down (and the Scandinavian countries are now mentioned specifically). If I’m reading it correctly, ethnicities that represented 20% of the estimate are now gone. Interestingly enough, the new estimate much more closely resembles the MyHeritage estimate I received when I transferred my DNA data there recently (free of charge).

Here is a summary of my old estimate, taken from Ancestry’s site today:

And here’s the new estimate:

And, just for kicks, here’s my MyHeritage ethnicity estimate:

If you’ve tested your DNA through Ancestry and haven’t checked your ethnicity estimate in the last week, I encourage you to hop over there and check it out! (And, if you haven’t already, you can transfer your raw DNA to MyHeritage here.)

By the way, I found this support page on Ancestry that explains how to make the most of your ethnicity estimate. It was news to me, so I thought I’d share.

Understanding genetic genealogy (finally!)

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Understanding genetic genealogy (finally)I attended Diahan Southard’s series of DNA lectures on July 28 as part of the St. Louis Genealogical Society’s Summer Speaker Series. As I mentioned in a blog post last month, I’ve had a hard time using DNA in my genealogical research, mostly because I have a difficult time understanding and retaining what I try to learn about DNA.

Diahan is an expert on making this information understandable to non-scientists like me. I’ve heard her speak before but this time, a door in my brain cracked open. It may have been because at the seminar we had the privilege of listening to Diahan for four straight lectures, each of which built on the prior one. It was really a brilliant program and Diahan is an excellent speaker.

So I came home and started applying what I’ve learned and I now feel that genetic genealogy is part of my tool box. Hooray!!

Here are some of the revelations from her talks that really helped me:

  • A DNA match with a person whose tree has no familiar surnames is cause for celebration, not frustration. The DNA shows you’re related. When you figure out how you’re related, you’ll add names to your tree.
  • The Shared Centimorgan (cM) Project can help you understand how you might be related to someone, based on how much DNA you share. Here’s Diahan’s explanation of centimorgans and the Shared cM Project. It’s a great resource.
  • The solution to most DNA is quandaries is (drum roll): Do genealogy! DNA evidence can bridge gaps or open holes in brick walls. But traditional genealogy is how you build your family tree.
  • Create a list of your 32 great great great grandparents’ surnames to help you find commonalities with DNA matches. I had not compiled a list like that before and I see how it will help recognize how I might be related to those DNA matches that are fourth cousins or closer.
  • On Ancestry, even if a DNA match has not linked a tree to his/her DNA results (so you see “no family tree”), click on the “View Match” button and see if there’s a drop-down list of trees you might look at under the Pedigrees and Surnames tab. There may be a tree (or a few trees) for you to look at.

One thing I noticed when I took a look my Ancestry DNA results the day after the Diahan’s seminar is that the shared centimorgans don’t necessarily accurately reflect the relationship. For example, my mother’s first cousin, whom I know personally, shares only 183 cM with me, rather than the 439 that first cousins once removed usually share, according to the Shared cM Project. So Ancestry guessed that she was my third or fourth cousin. The Shared cM Project is a great tool, but obviously just a guideline.

Today in my research session, I explored the public tree linked to someone with whom I share 158 cM. This is a huge tree but I was able to easily focus in on a shared surname. The tree is beautifully sourced, so even though I had only a few minutes left of my 30-minute research session this morning, I was able to add a fact and supporting document to my great great grandfather’s record in my family tree software. Tomorrow I’ll go back and explore that tree more.

I finally understand how DNA can help me in my genealogy research. Better yet, I understand how to use it. This is such a revelation.

If using genetic genealogy eludes you as it did me, I heartily encourage you to check out Diahan’s website, Your DNA Guide, and to listen to Diahan speak when you have the chance. She’s speaking at the Federation of Genealogical Societies conference later this month and I know she’ll be speaking at the 2019 NGS conference in St. Charles, Missouri, next May. (I’ll plan to be in the front row!) You can also do a consultation with her where she explains your DNA results to you. She’s a terrific resource.

Unmodified photo by Michael Knowles via Flickr. Used under Creative Commons License.

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