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Y-DNA Haplogroup Origins Frequently Asked Questions

What are Y-DNA haplogroups?

Y-DNA haplogroups are the major branches in our common paternal lineage. Your haplogroup traces your branch on the paternal tree of humanity back to our shared ancestor in Africa.

Are Y-DNA haplogroups the same as mtDNA haplogroups?

No, the names in the mitochondrial DNA (mtDNA) haplogroups do not correspond with the same names in the Y-chromosome DNA (Y-DNA) haplogroups.

How are haplogroups and their subclades named?

Y-DNA haplogroup and subclade names follow the conventions of the Y-Chromosome Consortium’s (YCC). The YCC short form names haplogroups with the first letter from the major haplogroup branch. This is followed by a dash and the name of the final SNP: S-M310, S-M254, S-P57, etc.

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