Y-DNA Haplogroup R1b-P312 (all downstream SNPs including R-U152 and R-L21) sub-forum
Y-DNA Haplogroup R1b-DF27 (all downstream SNPs inclusive) sub-forum
Y-DNA Haplogroup R1b-U152 sub-forum. Dedicated subsection for L2+ and downstream subclades contained within. Other U152 content posted here.
Y-DNA Haplogroup R1b-U152 L2+ sub-forum.
Y-DNA Haplogroup R1b-L21 sub-forum. For specific downstream SNPs, please post in their relevant subsections. For general L21, or L21*, post here.
Y-DNA Haplogroup R1b-L21 DF13+ sub-forum. For specific downstream SNPs, please post in their relevant subsections. For general, or DF13*, post here.
Y-DNA Haplogroup R1b-L21 DF63+ sub-forum.