The R-Z18 and Subgroups project is researching Z18, Z372, L257 and all other SNPs and clusters downstream of Z18. It is directly downstream of U106 and parallel to Z381. We expect to identify a number of subgroups in R-Z18, so as to make it easier for our members to find meaningful matches, and hope to be able to give the historical background of each of the groups found and at the very least specify a likely geographic origin and, where applicable, a migrational path for each group. Note (November 2023): The administrators of this project are currently working hard to update the project sub-grouping and supply you all with the latest news on its history and background.