News for G2a3b1a1d persons
The main news this past year in the U1 subgroup (G2a3b1a1) involves studies make in the Caucausus Mountains where your subgroup is most frequently found. Regretfully the authors of these two studies did not do the specific SNP testing for U1. However, they did provide some additional samples with marker testing. And there are lots of them that have similar marker values to men we know are proven U1+. Looking at the samples from the Balanovsky study, the samples similar to known U1 persons dominate the sample selection. A total of 86% of Shapugs were found to be G persons, the highest percentage found in any distinct group anywhere in the world, and as mentioned, a high percentage of them seem to be your U1 cousins. The Circassians also are heavily U1 and represent about 30 to 40% of the total population. These samples are from the northwestern Caucasus area of s.w.Russia. Going eastward, only a small amount of U1 is found among the Ossetians who occupy the central Caucasus, but in the northeast among the varied groups there the Avars are noteworthy for again having a significant percentage of U1 in their G samples, but G is not a major item in the Avar population
For information about Circassians (Adyghe people) link to
The Shapsugs are considered a branch of the Adyghe people. Their info found at
The authors estimate that the Circassians and Shapsugs split from a common group about 1400 years ago.
The Avars are explained at
There were some probably U1 samples among a small number of samples from the s.w. Caucasus, but it is probably best to ignore them because of the number.
Those of you in the G2a3b1a1d sub-subgroup of U1 are somewhat fortunate in having marker values that confirm your inclusion in the group. And everyone listed in your subgroup has this marker value oddity at DYS531 which defines your subgroup
So there is nothing we can recommend at this time for any of you to better define your subgroup.