Part 938sr - Figure Out How You Relate To Someone Based on cMs (CentiMorgans)

24 April 2019

Good Day,

I have been introduced to a very good tool that assists with trying to figure out the probabilities based on the cM - Centimorgan.

From the International Society of Genetic Genealogy Wiki

"In genetic genealogy, a centiMorgan (cM) or map unit (m.u.) is a unit of recombinant frequency which is used to measure genetic distance. It is often used to imply distance along a chromosome, and takes into account how often recombination occurs in a region...

The genetic genealogy testing companies 23andMe, AncestryDNA, Family Tree DNA and MyHeritage DNA use centiMorgans to denote the size of matching DNA segments in autosomal DNA tests. Segments which share a large number of centiMorgans in common are more likely to be of significance and to indicate a common ancestor within a genealogical timeframe."

The tool is the DNA Painter, The specific tool I am referring to is the Shared cM Project 3.0 tool v4. Click on the highlighted links provided.

Here are the results of me to a 1st cousin who's a match at 23andMe. 23andME indicates a cM result of 816.

Here are the relationship probabilities.

As I know that the individual is my 1st Cousin, it is a forgone conclusion that he, KLS, and I are rated at a 95.25% probability.

And here is the produced chart of possible matches and their associated cM ranges.

The search continues.  And I just keep on going.

If you have any comment, question, thought, idea please feel free to contact me via email at A Genealogy Hunt or


Rest of Entry goes here!


Living DNA Discount Codes on April 25, 2019 at 3:18 AM said...

The ancestry test have become so popular these days simply because they help people find their long last relatives. This entire concept is amazing! You never know who you are related unless you try on these tests

Post a Comment

Please Note: All information and data... and work found on this blogsite and website is available for your use. Please do not be a "scab" and steal this information without acknowledgement of source. Also pleased be advised that there could be Copyright issues and legal yada...yadada...das... so be prewarned...

A Genealogy Hunt Copyright © 2009-2016 - WoodMag is Designed by Ipietoon for Free Blogger Template