Home / Communities / Haplogroup R1a1a (Y-DNA) Haplogroup R1a1a (Y-DNA) Community Haplogroup · haplogroup · ancestry · y-dna · r1a1a Genome project for carriers of Y-DNA haplogroup R1a1a. Genome project for carriers of Y-DNA haplogroup R1a1a. ← All Communities · Atlas · GenoConnect