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Age: 10,120.5 ± 2,694.6; CI=95% (Behar et al., 2012b)
Origin: Undetermined
Mutations: A3672G
Parent Branch: U4b1
Descendant branch(s): U4b1a1 U4b1a2 U4b1a3 U4b1a4


Haplogroup U4b1a is a branch on the maternal tree of human kind. Its age is between 7,400 and 12,800 years (Behar et al., 2012b).

Phylotree History is the maternal (mtDNA) tree of humanity. It is maintained by Dr. Mannis Van Oven. Each build is a major update to the tree. The current build is #17.

01U4b1a3672Released 27 Aug 2008
02U4b1a3672Released 14 Oct 2008
05U4b1a3672Released 8 Jul 2009
06U4b1a3672Released 28 Sep 2009
07U4b1a3672Released 10 Nov 2009
08U4b1a3672Released 21 Mar 2010
09U4b1a3672Released 20 Jun 2010
10U4b1a3672Released 10 Aug 2010
11U4b1a3672Released 7 Feb 2011
12U4b1a3672Released 20 Jul 2011
13U4b1a3672Released 28 Dec 2011; Last Build to use the rCRS
14U4b1aA3672GReleased 5 Apr 2012; First version to use the RSRS
15U4b1aA3672GReleased 30 Sep 2012
16U4b1aA3672GReleased 19 Feb 2014
17U4b1aA3672GReleased 18 Feb 2016

GenBank Samples

GenBank is a database of genetic sequence data. It is run by the United States National Institute of Health. It serves as the main repository for mtDNA full sequence profiles. Samples come both from published academic literature and donations from genetic genealogy community members. In addition to GenBank samples, listings below may include other samples published but not submitted to GenBank such as those from the HapMap project.

Note: GenBank results currently use Phylotree build 16. I am working on changing resuts over to build 17.

Hg IDPublicationMissing VariantsAdditional Variants

Geno 2.0 Data

Data from Geno 2.0 is derived from the The National Geographic Society’s Genographic Project — the DAR. The Hg ID is specific to this site and is used to protect the identities of those who take part in Genographic research. Birth Country, Mother's Birth Country, and Maternal Grandmother's Birth Country have been normalized from DAR database fields. The Maternal Origin is determined based on the three previous fields.

Note: Geno 2.0 results currently use Phylotree build 16. I am working on changing resuts over to build 17.

Hg IDBirth
Birth Country
Maternal Grandmother's
Birth Country
Hap10085519United StatesUnited StatesCanadaCanada
Hap10085520United StatesUnited StatesUnited StatesUnited States

If you use the information in this table, please credit both this site and The National Geographic Society’s Genographic Project.

Related Sources

Additional Resources

mtDNA Consultants

The following members of the community offer paid consulting for those seeking help with mtDNA results. Inclusion on this list is not a recommendation or endorsement of any service.

Last Updated: Last updated: November 30, -0001 at 0:00 am


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