The goal of the project is to promote our knowledge of the G-Z6552 (G2a1) Y-DNA subclade. Please join the project if you belong to G-Z6552 and its downstream subclades or if you belong to haplogroup G and have STR marker values typical for the G-Z6552 subclade, such as DYS392=10 AND high values of DYS385 (DYS385a at least 14 or higher and DYS385b at least 15 or higher).