Before revision: Haplogroup R1b (M269) R1b (M269) is the second most common Y-DNA haplogroup found among Indigenous Americans after Y-DNA haplogroup Q.
After revision: Haplogroup R1b1a1a2 (M269) R1b1a1a2 (M269) is the second most common Y-DNA haplogroup found among Indigenous Americans after Y-DNA haplogroup Q.