Age: 17,674.2 ± 5,195.7; CI=95% (Behar et al., 2012b)
Origin: Undetermined
Variants: T6620C C9812T
FTDNA Tree: Link
Parent Branch: B4a
Descendant branch(s): B4a2a B4a2b

YFull Info

Name: B4a2
Age: 33700 to 23900 ybp [95% CI]
Expansion: 31600 to 13300 ybp [95% CI]
 Variants: T6620C C9812T

Note: This information does not imply an endorsement of YFull or their methods. It is provided at the request of readers.

Haplogroup B4a2 is a branch on the maternal tree of human kind. The woman who founded this line lived between 12,500 and 22,900 years ago (Behar et al 2012b).

mtDNA Haplogroup B4a2 Phylotree History

Phylotree.org 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.

Build# Called Variants (Mutations) Notes
01 B4a2 6620 9812 Released 27 Aug 2008
02 B4a2 6620 9812 Released 14 Oct 2008
05 B4a2 6620 9812 Released 8 Jul 2009
06 B4a2 6620 9812 Released 28 Sep 2009
07 B4a2 6620 9812 Released 10 Nov 2009
08 B4a2 6620 9812 Released 21 Mar 2010
09 B4a2 6620 9812 Released 20 Jun 2010
10 B4a2 6620 9812 Released 10 Aug 2010
11 B4a2 6620 9812 Released 7 Feb 2011
12 B4a2 6620 9812 Released 20 Jul 2011
13 B4a2 6620 9812 Released 28 Dec 2011; Last Build to use the rCRS
14 B4a2 T6620C C9812T Released 5 Apr 2012; First version to use the RSRS
15 B4a2 T6620C C9812T Released 30 Sep 2012
16 B4a2 T6620C C9812T Released 19 Feb 2014
17 B4a2 T6620C C9812T Released 18 Feb 2016

mtDNA Haplogroup B4a2 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 results over to build 17.

Hg IDOriginPublicationHg BLD16 Hg BLD17 Hg YFullMissing VariantsAdditional Variants

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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