Haplogroup G2c (Y-DNA) - Time To The Most Recent Common Ancestor (tMRCA)

Time To The Most Recent Common Ancestor (tMRCA)

The time to the Most Recent Common Ancestor (tMRCA) for European G2b, derived by generating a median-joining network of over 25 haplotypes with 67 Y-STRs, yields a date of 955 years from the average birth year of the testees (estimated to be 1950), with a standard deviation of 107 years. The mutation rate used is based on that of family groups with known most recent common ancestors. So far, this tMRCA includes all groups of European G2bs, including it seems from preliminary evidence, the Italians.

This late tMRCA date for all of G2b in Europe raises the question of when G2b first entered Europe. If G2b entered Europe at an earlier period, we would expect to see more divergent haplotypes than we currently see. The very unusual highly ethnically-specific distribution of G2b in Europe combined with the very late tMRCA raises the question of from where G2b could have entered Europe. Also, was the spread of G2b in Europe from the Kingdom of Poland to Germany and Italy, from German to Italy and Poland, or Italy northward to both other areas? No one particular region seems to be more divergent than any other, and in fact, there doesn't seem to be any geographically correlated subclades within European G2b, with samples from each region matching some from other regions more closely than ones from the same region.