Showing posts with label Chromosome map. Show all posts
Showing posts with label Chromosome map. Show all posts

Saturday, July 23, 2016

atDNA group

While we wait for more yDNA candidates and matches, those of you also exploring autosomal DNA (atDNA) to see what that may add to our overall knowledge of DAW(E) families may be interested in two updates:

On my (Lorna's) DAWE family page there's a updated chromosome map of some of the DNA segments that have been identified as having been inherited by the participants from either Isaac DAWE or his wife Sarah SMITH, who married in 1796 at Tavistock, Devon.
The 2014 version is still there for comparison.
It is already out of date as another descendant of William Smith DAWE and Mary WAY has popped up on GEDMatch, having tested at Ancestry


Over on DNASurnames, the DAWE DNA results page has an atDNA section added.
Included on that page is the current Dawe/Smith descendants chromosome map, but also a chart showing the predicted generations between matches along with the actual generations.
The chart also highlights the randomness of atDNA inheritance by showing which cousins do NOT have a detectable match (over 10cMs).
There is also a segment traceability diagram, copy below, showing how many connections between tested participants exist - thanks to the wonderful tools on GEDMatch. This one comes from the Multiple Kit Analysis - key for the diagram is on the above linked page.

Tuesday, October 28, 2014

Autosomal DNA for DAW(E)


The males need not be the only ones having dna fun for DAWE.

Although yDNA is the quickest and surest way of proving direct male lineages, it is restricted to just the direct male line descendants.
Autosomal DNA is far more inclusive in that anyone with a DAWE ancestor may contain segments of DAWE DNA in their genes.
Unfortunately the inheritance process is a little more random, and the lottery of life may mean it is no longer detectable, but you wont know until you try!
Want some background reading? Check out the ISOGG Wiki
- http://isogg.org/wiki/Portal:Autosomal_DNA
- http://isogg.org/wiki/Beginners%27_guides_to_genetic_genealogy

Autosomal results have not yet been included on the DAWE DNA project supplementary pages, but we are having a degree of success identifying segments of dna that can be attributed to DAWE ancestors from Devon.

Check out Lorna's personal DAWE page for a chromosome map, already out of date as more data flows in.

To join in with the multi-dimensional jigsaw involved in identifying the shared segments of dna and the shared ancestor responsible for passing on that bit of dna down the generations, do consider autosomal dna testing - FamilyTree DNA's FamilyFinder for preference as you can then join the DAWE DNA project there, but if you have tested at 23andme or ancestry and have DAWE ancestry, why not consider transferring to FamilyTree DNA?
See the DNASurnames project diary for their transfer incentive, club together with family members tested elsewhere, and get a free transfer.