G2a3b1a2a1b

News for G2a3b1a2a1b persons

Because your subgroup is relatively small, you must rely on the overall mother groups to your branch for most news.  The biggest mother group is L497, and L42 is a branch of it.  

Within the 1000 Genomes Project last fall I was able to extract perhaps about 100 SNP mutations found in five L497 men.  Some of these are SNPs shared by all L497 men.  There were an unusual number of these. suggesting that the L497 group existed as a small group for perhaps a millennium or more before a big expansion began.   Within all these SNPs are probably 10 to 20 that represent valid branches of the L497 subgroup.   We would like to have all of these available for testing, but Family Tree DNA will only provide tests that meet multiple criteria, and we were only able to get tests for Z725 and Z1901which likely only represent fairly small L497 subgroups.  We will continue to try to see that promising SNPs in this resource would be turned into tests.  If we can get these new SNPs as tests it will really accelerate progress in defining the movements of your L497 ancestors.


 L497 samples outside of Europe continue to be almost unheard of.   We  were particularly interested last year in a sample from the island of Lemnos off the western coast of Turkey. This island has known connections to the Etruscans.  This sample did turn out to be L497+ though it has some very eccentric marker values.  And a researcher found a sample with similar marker values from the west coast of Turkey that is also L497 -- the only Turkish sample of this category in his collection.  The question remains open whether whether these men are from an early branch of L497.  If so, this could argue for an early movement from the Turkish coast to Europe in conjunction with the Etruscans.

This year we added a new feature to the G web site that deals with the L497 subgroup.  
The purpose was to estimate the number of L497 men as a percentage in the population based on marker values.  This is an imperfect way to do this, but many of these sites do not have L497 testing, and this is the best we can do in the meantime.

In addition to all this, it must be pointed out that there is one L42 man in the 1000 Genomes Project.  I found perhaps 15-20 SNPs that were specific to this L42 man and not share by other L497 men.   Included within these SNPs in the L42 man are likely SNPs that show branching within L42 men.  We will be looking for ways to have these SNPs tested.
 
We will do some targeted testing on L42 men last year to try to refine the prediction criteria for being a L42 man.  Co-administrator Rolf Langland has a special interest in the L42 group because he is confirmed L42, especially why this is found among some Norwegians.  He makes the final decision as to who should be predicted as L42.  It is possible that both the L42 subgroups shown were added in the last 12 months.  Both have some dramatic marker values not shared by anyone else.  At this point we are continuing to evaluate a SNP found in the L42+ Paver/Pever men (L297) to see if it has coverage beyond that family.  If any one of you who has not tested for this wants to test for this, your additional results would be welcome.  But we are listing it is private until some different result is obtained.

Because your G2a3b1a2a1b subgroup is defined by a marker value oddity, and everyone of you has this, there is no more testing that can be recommended for you at this time.  This is a subgroup that was created in January.    The defining oddity is three values for the DYS413 marker.  Family Tree DNA has not been able to display the results for additional components for this marker, and one must specifically ask about them.  Mr. Langland and Mr. Swanstrom were instrumental in getting this subgroup created and locating the information about hidden DYS413 results. It is possible that one or more additional men share your results, and they will be added to your subgroup if identified.

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