chromosome browsers – Family Locket

Segment Triangulation: Proving an Ancestral Line

Aug 9, 2019

Have you heard the term "segment triangulation" associated with DNA and wondered what that meant? Perhaps you wondered if this could help you confirm an ancestor that you've researched? Which DNA testing and third party companies offer this tool? In this article, I'll define the term and show how the process can help you in your genealogy journey of discovering your genetic family tree. Pedigree Triangulation I previously wrote about pedigree triangulation and used the following visual from the ISOGG Wiki page to explain the concept. You and your DNA match both received DNA from your Most Common Recent Ancestor (MRCA)....

The Chromosome Browser: A Tool for Visualizing Segment Data

Aug 4, 2019

For most of us, the goal of genetic genealogy is to identify how our DNA matches are related to us. We want to determine our common ancestor or identify an ancestor who was previously unknown to us. Chromosome browsers help us do that. By determining that an autosomal DNA segment was inherited from a certain ancestor, we can use that segment information in the future to identify matches whose connection to us is unknown. Chromosome browsers also help us triangulate segments of DNA data shared with 2 or more genetic matches. When segment triangulation is achieved, we are able to...