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This is the paper where they described the current haplotype naming system. They explain in the paper things like using P(xR1a1) to mean "all in haplogroup P except R1a1".
This paper and the "Y chromosome comes of age" paper are the two most useful papers in understanding all the Y-chromosome distribution data (at least, thats what I have found).
3 types of "R" haplogroups, P(xR1a), R1a Undifferentiated -very rare, and R1a1.
First, does anyone know exactly what "P" (xR1a) is? Base on the article it was what is labled R1a in the article tables that @ 10% of all Leviim (Ashkenaz and Sephardic).
See table 1.
Is P(xR1a) its own haplogroup?, Or just a way to Distinguish Between R1a and R1a undiferentiated. (supposed to be rare)
Also any info on R1a Vs. R1a1 would be appreciated.
Izzy, I think P(xR1a) means "P except R1a." P is a sort of super haplogroup which includes all Q and R haplogroups. The major component would be R1b, the largest haplogroup in Europe. Notice that Germany in the chart is almost 47% P(xR1a). Actually, I believe the reference reads P*(xR1a); I don't understand why there's an asterisk.
Izzy,
A better/easier to read haplotree is at; www.familytreedna.com/haplotree.html. P is the marker/mutation which ocurred prior to the mutation which is now labelled R haplogroup. I believe that in the ( ) means that it does not include that. For example all in the R haplogroup (identified by M207 marker) also have the marker (M45) that shows they descend from P as well. A little confusing be the haplotree should help.
Don Potter
3 types of "R" haplogroups, P(xR1a), R1a Undifferentiated -very rare, and R1a1.
First, does anyone know exactly what "P" (xR1a) is? Base on the article it was what is labled R1a in the article tables that @ 10% of all Leviim (Ashkenaz and Sephardic).
See table 1.
Is P(xR1a) its own haplogroup?, Or just a way to Distinguish Between R1a and R1a undiferentiated. (supposed to be rare)
Also any info on R1a Vs. R1a1 would be appreciated.
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