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Age: 7,071.9 ± 2,667.1; CI=95% (Behar et al., 2012b)
Origin: Undetermined
Mutations: A6113G T16357C
FTDNA Tree: Link
Parent Branch: X2a1
Descendant branch(s): X2a1a1


Haplogroup X2a1a is a branch on the maternal tree of human kind. Its age is between 4,400 and 9,700 years (Behar et al., 2012b).

mtDNA Haplogroup X2a1a 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.

04X2a1a6113 16357Released 10 May 2009
05X2a1a6113 16357Released 8 Jul 2009
06X2a1a6113 16357Released 28 Sep 2009
07X2a1a6113 16357Released 10 Nov 2009
08X2a1a6113 16357Released 21 Mar 2010
09X2a1a6113 16357Released 20 Jun 2010
10X2a1a6113 16357Released 10 Aug 2010
11X2a1a6113 16357Released 7 Feb 2011
12X2a1a6113 16357Released 20 Jul 2011
13X2a1a6113 16357Released 28 Dec 2011; Last Build to use the rCRS
14X2a1aA6113G T16357CReleased 5 Apr 2012; First version to use the RSRS
15X2a1aA6113G T16357CReleased 30 Sep 2012
16X2a1aA6113G T16357CReleased 19 Feb 2014
17X2a1aA6113G T16357CReleased 18 Feb 2016

mtDNA Haplogroup X2a1a Data Sources

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
Hap5016226Perego et al., 2009noneX2a1a:315.1C, 12738, 15949, 16183C
Hap5016227Perego et al., 2009noneX2a1a:315.1C, 15949, 16183C

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

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

Sources & Resources

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.


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

-001-11-30T00:00:00+00:00June 6th, 2016|