No, You Don’t Really Have 7,900 4th Cousins: Some DNA Basics for Those With Jewish Heritage
Jennifer Mendelsohn

Great article. I used to require >20cM for the longest segment for <150 total, but I’ve recently reduced it to 16cM after finding that a couple of known, traceable relatives were in that area.

It’s worth noting that the new Tier 1 one-to-many utility on Gedmatch allows you to filter to only show matches with a longest segment greater than a given length. This is awesome for endogamous populations. You can set this filter and still sort by total cM, which is precisely what I want.

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