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by red75prime 462 days ago
The article reads "some four billion human beings alive today—can trace their ancestry to the Yamnaya". It's 50%. I haven't checked the research though.

> r1b's population is only 190 million [1]

Their population likely had multiple haplogroups. R1b was the most common (5000 years ago). But, yeah, the 50% number looks too high.