News for G2a3b1a2c persons
Because your subgroup is relatively small, you must rely on your overall mother group -- L 497 -- for most news.
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.
Because your G2a3b1a2c subgroup is defined by the DYS388 marker value oddiity, and 100% of you have tested for this, we cannot recommend any additional testing for you at present. However, we will continue to look for ways to further subdivide you. When new SNPs within L497 are available -- and because you are an established subgroup -- we will want to know how your group tests for these.