Haplogroup A

Y-DNA (paternal line)

The deepest-rooting Y-DNA lineages, found today mainly in parts of Africa; branch A00 is one of the oldest known human paternal lineages. [isogg]

For a fuller account, search “Haplogroup A” in a reference such as Wikipedia or ISOGG.

Remember: a haplogroup is a deep, broad lineage shared by many people — not an ethnicity, a nationality or a clan. See what DNA can and can’t tell you.

Sources

[isogg] International Society of Genetic Genealogy (ISOGG), Y-DNA Haplogroup Tree. Reference — cite for haplogroup nomenclature only (not frequencies) · link