Robinson Genealogy

The mean frequency of DYS 390 is 24. We are 21, and that is very rare. What does it mean?

Baltic--Russian R1b:Research showed that the greatest diversity of R1b's DYS 390 locus is within the Russian-Baltic region. The data suggested that the Russian-Baltic variant migrated/expanded from the Kazan region of Russia westwards to Moscow, and then to the Baltic States of Finland, Estonia, Lithuania, Latvia & Poland.
In this Baltic-Russian area, a sample of 159 haplotypes showed the R1b DYS390 percentages to be:

DYS 390=25. 28.9%;
DYS 390=24. 32.7%;
DYS 390=23. 32.1%;
DYS 390=22. 3.1%

Diversity: 68.6% (²)



This is not the Robinson's territory at all. The number of 21 does not show up at all.

Heyer study of 1997 recorded a mutation rate of zero for DYS390 and DYS393. Although the DYS390 marker
has not exhibited a mutation rate as consistently low as DYS393 in other studies, the results of the Heyer study suggest
that it is a relatively stable marker. As such, particular values of DYS390 may be acquired less often by random
mutation, and therefore may be more likely to reflect a shared ancestry among the haplotypes that exhibit them.
The sense we get from these AMH variations is that they occur predominantly among the
Celts of continental Europe and their Teutonic brethren along the North Sea coast.

R1b DYS390=21 Haplotype #1

This haplotype is rare, and it is difficult to make judgments without sufficient data. Nonetheless, two of the three
European hits are Iberian. Moreover, both Galicia and the Strasbourg area have a history of Celtic settlement.

Reference: http://freepages.genealogy.rootsweb.ancestry.com/~gallgaedhil/haplo_r1b_dys390_21_
or_22.htm
http://www.worldfamilies.net/Tools/r1b_ydna_in_europe