Online presentation at Portland ISOGG Advanced DNA meeting on January 28


This might be of interest to some members of the group. Because our next SKCGS Study Group will be "Research Like A Pro With DNA" I'm actually considering getting up and getting conscious early enough to listen in!

While at the Special Interest Group: DNA - Advanced SIG page at I noticed that they have there both the slides and the talk that Evert-Jan Blom PhD gave last year about auto-clustering, auto-kinship, auto-trees, etc. in all the platforms, even Ancestry. I tried out some of those tools in Gedmatch but was a bit too ignorant to know what I was looking at. The slides and talk cover the subject quite well. The title is Unraveling Your Genealogy with Genetic Affairs, Blom's website. It's interesting to consider how GenAffairs is like but different than Borland Genetics.

Special Interest Groups
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From: <info@...>
Date: Wed, Jan 25, 2023 at 9:52 AM
Subject: Online presentation at Portland ISOGG Advanced DNA meeting on January 28

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“The more the merrier - dealing with large numbers of DNA matches”

This is the title of my online presentation to the Portland ISOGG Advanced DNA meeting on January 28. In today's world, you don't need to live in Portland or be part of ISOGG if you want to join the presentation.

How large is "large"?

I will showcase one specific triangulated group of mine that includes 110 DNA cousins and will explain how I have identified several most recent common ancestors (MRCA's) including one who lived in early 1700s.

I will tackle a couple of topics that will help every genetic genealogist

- Should we work at all on regions (loci) with a large number of DNA matches?

- Reasons for regions with a large number of DNA matches

- The genetic genealogists dilemma part 1 - so many DNA matches, so little time

- Solution 1: Using automation (for DNA triangulation)

- The genetic genealogists dilemma part 2 - so many DNA matches, almost no one answers/has information

- Solution 2: Using surnames/locations and other Goldilocks

- The genetic genealogists dilemma part 3 - only having small matches (distant cousins) within a TG

- Solution 3: Identify MRCA’s between DNA cousins and “walk the ancestor back”


How can you join in?

This meeting will be held via Zoom at 9 am Pacific Time on January 28.

Please register in advance for this meeting at by clicking on the link “Meeting Registration” for the January 28 meeting. After registering, you will receive a confirmation email containing information that includes the URL for joining the meeting.

Hope to see you online,


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Valorie Cowan Zimmerman
Gedmatch SQ780327C1 | mtDNA H1ac