Concepts – Why Genetic Genealogy and Triangulation?

One of the questions often asked is why triangulation in genetic genealogy is so important. Before I answer that, let’s take a look at why genealogists use autosomal DNA for genetic genealogy in the first place. Why Genetic Genealogy? Aside from … Continue reading

Concepts – Percentage of Ancestors’ DNA

A very common question is, “How much DNA of an ancestor do I carry and how does that affect my ethnicity results?” This question is particularly relevant for people who are seeking evidence of a particular ethnicity of an ancestor … Continue reading

Concepts – The Faces of Endogamy

Recently, while checking Facebook, I saw this posting from my friend who researches in the same Native admixed group of families in North Carolina and Virginia that I do. Researchers have been trying for years to sort through these interrelated … Continue reading

Concepts – Segment Size, Legitimate and False Matches

Matchmaker, matchmaker, make me a match! One of the questions I often receive about autosomal DNA is, “What, EXACTLY, is a match?”  The answer at first glance seems evident, meaning when you and someone else are shown on each other’s … Continue reading

Concepts – Calculating Ethnicity Percentages

There has been a lot of discussion about ethnicity percentages within the genetic genealogy community recently, probably because of the number of people who have recently purchased DNA tests to discover “who they are.” Testers want to know specifically if ethnicity percentages are right … Continue reading

Concepts – Undocumented Adoptions vs Untested Y Lines

So you took the Y-line test and you don’t match the surnames you expected to match and now you’re worried. Is there maybe an “oops” in your lineage? One of two things has happened. Either your line has simply not … Continue reading

Concepts – Why DNA Testing the Oldest Family Members is Critically Important

Recently, someone asked me to explain why testing the older, in fact, the oldest family members is so important. What they really wanted were talking points in order to explain to others, in just a few words, so that they … Continue reading