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This project is a meeting place for users who share the J1 Y-DNA haplogroup, which means they are related along their paternal lines. Users in this group may want to share their family trees with each other to find overlaps and merge duplicate profiles in order to join or expand the World Family Tree and discover new relatives.
This project is about a Y-haplogroup, which defines a group of men by a shared set of inherited features in the DNA of their Y-chromosome. This implies they have a patrilineal ancestor in common, because only males carry a Y-chromosome, which they inherit from their father. The major Y-haplogroups were formed thousands of years ago, and therefore each group can today include thousands to millions of men. For an introduction, you can visit the Y-DNA Haplogroups project, the DNA Testing project, or start at the beginning with the DNA Primer project.
The J1 Y-DNA haplotype is defined by the presence of a mutation at the M267 SNP marker, and therefore this haplotype is designated J-M267 or J1-M267 in the more recent, preferred "shorthand" naming scheme. Rather than using this project page, please go to the J-M267 project page for more information about this haplogroup.