Segments Don’t Lie

Comparing MeMom and a Match of MineThe red segments represent matchDoes she match my Mom?

Overlaps in Browsermay not match each other

Me Match=RedGrandma=Green(from Nicaragua)Grandpa=Blue(Colonial American)

Comparing other set of Grandparents with same match. They Don’t share the segments

Testing 2nd cousinsor finding 2nd cousins who have already tested will help recapture the DNA we inherited from Grandparents

Collecting and ConnectingDNA segments

Triangulation

What if we don’t have many close relatives who have tested. We can compare our matches and see if we find places where several of our matches segments overlap. We can do this using the chromosome browsers at 23andMe or Family Tree DNA. It’s actually best to upload data from the companies and GEDmatch to Genome Mate Pro where we can compare all matches. If we find an area where 3 or more matches share a segment and share an ancestor or and ancestral couple we have a triangulation. We can then name that segment after the corresponding family or ancestor.

Vee and Other matches

Vee and Me

She shares surname Grenier

Comparing at Genome Mate Pro found more matches on same segment. None sharing the name Grenier.

Most are related to my NAD’s

Collect IBD segments of confirmed cousins

Upload segment data to Genome Mate Pro or Kitty’s Mapper for comparison

Test all the close relatives you can afford to test

Test your oldest relatives first

Use IBD segments to find more precise relationships to matches who don’t have a paper trail