J1c3d (Y-DNA)

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.

This haplogroup project's name uses the older, now secondary, hierarchical format for Y-chromosome haplogroup names. Because the haplogroup names under this earlier system would change with the identification of new branches, it's no longer possible to know unambiguously to which current haplogroup this designation refers. Anyone with an old test result that assigned them to a Y-haplogroup with this name should update their information to use a shorthand format name that references a defining SNP.

Naming History

"J1c3d" is an hierarchical "long form" designation for the J1-M267 subclade now most frequently designated using shorthand format as J-L147.1 or J-L147. The SNP name extension (".1") indicates that the L147 marker is found in more than one Y-chromosome haplogroup lineage and therefore can't be used by itself to identify a unique haplogroup (source). The SNP name L147.1 is now sometimes designated simply J-L147, and L147.2 as I-L147, to indicate how this mutation is found within both the I and J lineages respectively (source). J-L147.1 is a subclade of J-P58 (formerly known as J1c3), and therefore the combination of both the P58+ and L147+ mutations must be used to assign someone definitively to this haplogroup.

J1c3d was also formerly named as J1e, but renamed as part of the usual change of designations that frequently happened under the hierarchical Y-haplogroup naming scheme, which is therefore no longer recommended.