Jan 31, 2026
R1b1a1b1a1a2b2
The string is a phylogenetic Y‑chromosome label that, by its numbering, sits inside the well‑known R1b trunk and therefore is nested under the R‑M269 clade that dominates (R‑M269 = R1b1a1b) . Availabl...
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The R1b1a1b1a1a2b2 haplogroup is a subclade of the R-M269 clade, which is commonly found in Western Europe. The topic is about the definition, geographic distribution, and age of this haplogroup.