G2a3b1a3g

News for G2a3b1a3g persons

This G2a3b1a3g subgroup under most circumstances is not large enough to have separate news events, and some reliance must be placed on the overall DYS568=9 subgroup of which you are a branch.

There is considerable good news for the DYS568=9 subgroup. For about 5 years we have been calling it the DYS568=9 subgroup.  DYS568 is found in upgrades to 67 markers or by ordering just DYS568.  All attempts to find a more reliable SNP mutation (instead of DYS568) to define our subgroup have failed over the past five years.  But we have now found a man in our group in the 1000 Genomes Project, and he has several dozen SNPs never previously identified.  We have been able to get two of these made into individual tests. There is enough preliminary evidence to confirm that these SNPs are valid and found in DYS568=9 men.  We suspect that Z724 will be an overall SNP that contains within it the DYS568=9 group and some other miscellaneous smaller groups.  A haplogroup G man from Beijing China tested positive for Z724 and this gives a hint that Z724 has the widest coverage.  Then under Z724 is Z1903 which may be equivalent to DYS568=9, but we are still trying to determine its boundaries.  We may need more of you to test for these two SNPs to define their boundaries.

It is necessary to backtrack just a bit.  In my own sample, the lab by chance noticed a SNP mutation they have labeled L640.  Testing done in recent months established that this is confined to a small number of British Isles ancestry DYS568=9 men.  Amazingly the man in the 1000 Genomes Project from Utah also has this mutation.  So he is somewhat of a cousin to me.   But the testing for Z1903 shows that Z1903 includes not only our British L640 group but also DSY568=9 men outside it.  

And all those other SNPs found in the Utah man in the 1000 Genomes Project likely contain among them some that define the branching within DYS568=9.  We eventually may learn from this exactly when the Jewish and other defined subgroups branched off providing thereby critical information on the migrations of our ancestors.

I reported to you early last year that two DYS568=9 men were found in North Ossetia, in the central part of the Caucasus Mountains. These were the first DYS568=9 men identified outside Europe.  There have since been no other such men identified though we have received additional G samples from the Caucasus region.  In late January 2012 there was a study from the Caucasus that for the first time included values for the YCA marker.  This is rather critical for us because we almost all have 20, 21 for this, and that is atypicalwhen compared to other men within the G2a3b1a (L140) group.  This study I mentioned only involved the Tats of the n.e. Caucasus (a region the Russians call Dagestan)   There was one 20, 21 G man listed, but I determined on the basis of the other marker values that he is unlikely to be DYS568=9.  Hopefully more studies will list results for YCA.

Because we can identify you are part of your G2a3b1a3g subgroup of DYS568=9 from two of the markers in the 25 marker test, we have confirmation of your subgroup for all of you because all of you tested for DYS390 and DYS464.  So there is no additional testing we can recommend for you at this time, but we will continue to look for ways to subdivide your subgroup.  

By way of exception, Mr. Rivera Ortiz needs to confirm his status regarding DYS464 and thus his correct assignment to your subgroup.  This costs less than $10, and is a real bargain.

We have probably not added any new members to your group in recent years.  It is unknown why this odd circumstance affects your subgroup almost exclusively.

It may be necessary to have someone from your subgroup to participate in the testing for Z724 or Z1903 depending on the results of the initial testing for these.
Comments