When you hear the term endogamy, what communities come to mind? French Canadians, Puerto Ricians, Mennonites, Pacific Islanders, and Ashkenazi Jews are common examples. Some of these examples are from island peoples, so what about the Irish? Last time, I discussed the effect of a clearly endogamous community, Ashkenazi Jewish (AJ), on a relatively non-endogamous community, German, within my dad’s match list. My dad has more AJ matches with longer segments (greater than 20 cM),...
As genealogists we want to understand our match lists. We want to identify the matches that will give us the solid clues we need to make progress on our target ancestor’s family tree. Endogamy and its close cousins, pedigree collapse and multiple relationships, complicates that. Diana laid out the definitions in the first blogpost in this series: “Endogamy, Pedigree Collapse, and Multiple Relationships: What’s the Difference and Why Does it Matter?” Nicole wrote about strategies...
Today’s episode of Research Like a Pro is about double cousins. Do you have any? We’ll talk about how double cousins and other relatives with whom you share multiple relationships can affect DNA match analysis and genetic network analysis. Although double 3rd cousins don’t always share an inflated amount of DNA, you can definitely tell they are double cousins in your network analysis. Join us as we discuss these issues. Transcript Nicole (1s): This...
Do you have DNA matches that seem to belong in multiple genetic networks? Are you nervous that you’re seeing pedigree collapse or endogamy? Before you despair, realize that this phenomenon could be due to DNA matches sharing more than one common ancestral couple with each other, or what’s often called “multiple relationships.” In Diana’s post, Endogamy, Pedigree Collapse, and Multiple Relationships: What’s the Difference and Why Does it Matter, she talked briefly about multiple relationships...
We are starting a new series called Research Like a Pro with DNA Q&A. Study group and eCourse members ask questions, and we answer them with a short video. Today, the question is: “what is the significance of the first cluster in an AutoCluster or Collins Leeds Method chart?” I answer the question by showing an example of a MyHeritage AutoCluster chart where the clusters are ordered by size (number of matches in the...
