Paternal haplogroup research PF5172 & Z7430: J2a PF5169, PF5174, YSC0000246, L1064, L198, PF5177, PF4341, YSC0000253, etc. Please do not join if you are from other Y-Haplogroups (PF5197- J2-). For a better network of research, comparison and possible 11/12 marker matches all J2a-PF5197 members that have not already done so will also be joined to J2-M172 and if needed to J-M304 Project.