in gentics wha is Haplogroup r1b
Distribution of R1a (purple) and R1b (red). See also this map for distribution in Europe. In human genetics, Haplogroup R1b (M343) (previously called Hg1 and Eu18) is the most frequent Y-chromosome haplogroup in Europe.Its frequency is highest in Western Europe, especially in Atlantic Europe (and due to European emigration, in North America, South America, and Australia).istribution of R1a (purple) and R1b (red). See also this map for distribution in Europe. In human genetics, Haplogroup R1b (M343) (previously called Hg1 and Eu18) is the most frequent Y-chromosome haplogroup in Europe.