This page is about the Y chromosome haplogroup A. Its purpose is to explain
the genealogical and anthropological meanings of the determination.
If you are coming to this page directly, you may want to read first
about haplogroups in general; you
will probably need
As of this writing, Taylor Family Genes has three members in this haplogroup,
about 0.2% of the total membership.
- None are matched (grouped) into genetic Taylor families based on similarity of their haplotypes.
- All are presently ungrouped; they have no genealogically significant matches within the project.
About this Haplogroup
Haplogroup A is the foundation from which all other haplogroups spring and
is therefore the oldest. It is thought to have arisen about 338,000 years ago,
with a 95% confidence level of 237,000 to 548,000 years. It originated in
Africa, perhaps pre-dating the development of anatomically modern homo sapiens sapiens.
- Unlike other haplogroups, its parent is unknown
- Its immediate child, BT (characterized by M42), is descended from the A2-T subclade but has not
been found in modern populations.
- Its next-generation offspring are B (characterized by M181), with living representatives, and
CT, which gave rise to other haplogroups but also has no living
Members of this haplogroup may want to consider joining the DNA project for
We do not publish individual members' Y-DNA results. They may be viewed on
the Family Tree DNA public site,