Age: 49,590.1 ± 8,064.0; CI=95% (Behar et al., 2012b)
Origin: Undetermined
Variants: G8251A
FTDNA Tree: Link
Parent Branch: M
Descendant branch(s): M42 M74

YFull Info

Name: M42'74

Age: 53700 to 50200 ybp [95% CI]

Expansion: -

Variants: G8251A

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


Haplogroup M42’74 is a branch on the maternal tree of human kind. Its age is between 41,500 and 57,700 years (Behar et al., 2012b).

mtDNA Haplogroup M42’74 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 M42a 8251 Released 27 Aug 2008
02 M42a 8251 Released 14 Oct 2008
03 M42a 8251 Released 1 Mar 2009
04 M42a 8251 Released 10 May 2009
05 M42a 8251 Released 8 Jul 2009
10 M42’74 8251 Released 10 Aug 2010
11 M42’74 8251 Released 7 Feb 2011
12 M42’74 8251 Released 20 Jul 2011
13 M42’74 8251 Released 28 Dec 2011; Last Build to use the rCRS
14 M42’74 G8251A Released 5 Apr 2012; First version to use the RSRS
15 M42’74 G8251A Released 30 Sep 2012
16 M42’74 G8251A Released 19 Feb 2014
17 M42’74 G8251A Released 18 Feb 2016

mtDNA Haplogroup M42’74 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 ID Origin Publication Hg BLD16 Hg BLD17 Hg YFull Missing Variants Additional 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 ID Birth
Birth Country
Maternal Grandmother's
Birth Country
Hap10070644 Unspecified Unspecified Unspecified Unspecified

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

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