World Families Forums - Known Pedigrees and yDNA Triangulation

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Author Topic: Known Pedigrees and yDNA Triangulation  (Read 28 times)
James Phillips
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« on: February 22, 2015, 03:00:03 PM »

There are now seven published Deaton pedigrees available at the project website in the Pedigree section. 

Known pedigrees are extremely valuable when combined with yDNA STR results. 

To give an example, there are two Deaton Project Lineage 1 kits with the ySTR named CDY that have a value 38-40.  CDY is considered to be a fast mutating ySTR marker and is tested as part of the y37 panel. Currently there are six kits tested to y37.  As stated, two have a value of 38-40.  The other four all have 38-39.  In itself this is not particularly noteworthy.  But when combined with known pedigrees it reveals something that is noteworthy. 

One of the CDY 38-40 kits has a known pedigree that traces back to Thomas Elijah Deaton via his son James Elijah Deaton.  The other CDY 38-40 does not have an associated pedigree.

Of the four 38-39 kits, three trace back to Thomas Elijah Deaton via his son William Deaton. 

As more ySTR test results are added, it may at some point be possible to predict someone's pedigree based on mutation patterns.  This technique is called yDNA triangulation.

Here are links to two interesting articles that discuss this:

Roberta Estes' DNAeXplained - Genetic Genealogy blog:

http://dna-explained.com/2013/06/18/triangulation-for-y-dna/

Diana Gale Matthiesen's Diana, Goddess of the Hunt - for Ancestors! blog:

http://dgmweb.net/DNA/General/SignatureMarkers.html

Please consider posting your known Deaton pedigree to the project website.

Jim Phillips
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James Phillips
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