Haplogroups / Paternal line
R1b1a1a2
The Bronze Age expansion into Europe
The story of this line
R-M269 is the specific branch of R1b that swept western Europe. The great majority of its living carriers descend from a small number of men who lived during the Bronze Age, which is why a haplogroup this common can still have such a shallow internal structure. Its subclades divide neatly: one is concentrated in the Atlantic west, another along the Rhine and in Germanic-speaking areas, another in Iberia.
What it traces
R1b1a1a2 sits on the family tree of the Y chromosome, passed from father to son. Following it back means following your father, his father, and so on back, one unbroken thread. It says nothing about the thousands of other ancestors you had at the same depth, which is the single most common misunderstanding about haplogroups.
The route, roughly
- Pontic-Caspian steppe about 6 thousand years ago
- The Danube about 4.8 thousand years ago
- Central Europe about 4.5 thousand years ago
- Atlantic Europe about 4 thousand years ago
A route drawn from where the branch arose and where it is found today. It is the path of one thread through your ancestry, not a map of where your family as a whole came from.
Is R1b1a1a2 your haplogroup?
If you have taken a test with 23andMe, AncestryDNA, MyHeritage, Family Tree DNA, TellMeGen or Living DNA, the answer is already sitting in the raw data file they gave you. You do not need another test.
Sequencings reads the file in your browser. It is never uploaded, and you can confirm that in your browser’s network tab while it happens.
Common questions
What is haplogroup R1b1a1a2?
R1b1a1a2 is a branch of the human paternal family tree, traced through the Y chromosome, passed from father to son. R-M269 is the specific branch of R1b that swept western Europe. The great majority of its living carriers descend from a small number of men who lived during the Bronze Age, which is why a haplogroup this common can still have such a shallow internal structure. Its subclades divide neatly: one is concentrated in the Atlantic west, another along the Rhine and in Germanic-speaking areas, another in Iberia.
How old is haplogroup R1b1a1a2?
It first appeared about 6,000 years ago, in Europe. That is a coalescence estimate with a wide margin, not a date.
How do I find out if R1b1a1a2 is my haplogroup?
If you have taken a home DNA test, the answer is already in the raw data file you were given. Sequencings reads that file in your browser and traces both lines without uploading anything.
Does haplogroup R1b1a1a2 tell me about my health?
No. Haplogroups describe one line of descent. They are not used to assess health risk, and anyone who tells you otherwise is overreaching.
Sources
ISOGG Y-DNA Haplogroup Tree, marker coordinates via ybrowse.org (hg19).