View Full Version : New branch K1a10b at YFull

J1 DYS388=13
08-17-2020, 10:31 AM
K1a10 with marker 16047 has been reinstated as the new branch K1a10b by the site YFull.
Background: Family Tree DNA and other companies continue to use a more static mtDNA tree agreed by a consortium called PhyloTree.
An extract of PhyloTree Build 17 showing K1a10 can be seen at http://www.ianlogan.co.uk/sequences_by_group/k1a10_genbank_sequences.htm
There you see a section labelled K1a10 G16048A which has three cases. Those three cases do not look like a parent branch of the section below it, K1a10a, because those three cases share the marker G16047A, as well as the markers G316A and G8764A.
Thus, K1a10 with G16047A (or 16047) certainly looks like it ought to be a branch on its own.
The experimental web site YFull is carrying out leading-edge work on the Y-DNA and mtDNA trees. A couple of years ago YFull changed its own mtDNA tree to show K1a10 with G16047A as the branch K1a10b, with an age of about 1,000 years.
YFull later decided to undo that while it worked on its categorization procedures.
YFull has now reinstated the branch K1a10b, defined as K1a10 with G16047A: https://www.yfull.com/mtree/K1a10/
YFull has estimated the age of K1a10b as 1,150 years. That Time to Most Recent Common Ancestor is clearly due to the fact that one of the two cases in that branch has an extra mutation. That mutation is not shown at YFull, but the same two cases appear on the version of PhyloTree which I referenced earlier (http://www.ianlogan.co.uk/sequences_by_group/k1a10_genbank_sequences.htm). The extra mutation in the Irish case is C6528Y.
I know of 13 cases of K1a10 with 16047. You can see them as gold stars on my map at https://www.google.com/maps/d/edit?mid=1Y8ZJIjblMPzmNesm37Ea7n3Yv3w&usp=sharing
As you can see there, they are not a tight geographical cluster.
I donít know where the first K1a10 woman with 16047 lived. The answer to that question would normally come from looking at cases of the next higher branch, in this case, plain K1a10. I can find only four cases of that. They are shown as golden suns on my Google Map.
Note that YFullís mtDNA tree has a plain K1a10 case with id:KF161130.1. That is a mistake which YFull will eventually correct. (It is a Danish case of K1a1b1 which has 16048 by coincidence.)
In summary, K1a10b (K1a10 with 16047) has an as-yet untold story, and the scant evidence suggests it involves England around the years 800 to 1000 AD.