Haplogroup I2a1 is a Northwestern European branch on the maternal tree of human kind. Its age is between 1,000 and 5,000 years (Behar et al., 2012b).
In GenBank, there are two samples from citizen science contributions. Both trace their origins to Ireland.
In the Geno 2.0 database, the samples with known origins come from Finland. There are also samples from Canada, Australia, and the United States that indicate women from this lineage took part in recent migrations to all three places.
mtDNA Haplogroup I2a1 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.
|11||I2a1||3398||Released 7 Feb 2011|
|12||I2a1||3398||Released 20 Jul 2011|
|13||I2a1||3398||Released 28 Dec 2011; Last Build to use the rCRS|
|14||I2a1||T3398C||Released 5 Apr 2012; First version to use the RSRS|
|16||I2a1||A533G T3398C||Released 19 Feb 2014|
|17||I2a1||A533G T3398C||Released 18 Feb 2016|
mtDNA Haplogroup I2a1 Data Sources
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||Publication||Missing Variants||Additional Variants|
|Hap5007987||Greenspan et al., 2006 - 2016||none||I2a1:315.1C|
|Hap5008239||Greenspan et al., 2006 - 2016||none||I2a1:315.1C|
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.
|Hap10048859||United States||United States||Finland||Finland|
|Hap10048860||United States||United States||Finland||Finland|
|Hap10048861||United States||United States||United States||United States|
|Hap10048862||United States||United States||United States||United States|
|Hap10048863||United States||United States||United States||United States|
|Hap10048864||United States||United States||United States||United States|
|Hap10048865||United States||United States||United States||United States|
|Hap10048867||United States||United States||Unspecified||United States|
|Hap10048868||United States||United States||Unspecified||United States|
|Hap10048869||United States||United States||Unspecified||United States|
|Hap10048870||United States||Unspecified||Unspecified||United States|
If you use the information in this table, please credit both this site and The National Geographic Society’s Genographic Project.
Sources & Resources
- Behar, D.M., van Oven, M., Rosset, S., Metspalu, M., Loogväli, E.L., Silva, N.M., Kivisild, T., Torroni, A. and Villems, R. (2012). A “Copernican” reassessment of the human mitochondrial DNA tree from its root. American journal of human genetics, 90(4), 675-684.
- Fan, L., & Yao, Y. G. (2011). MitoTool: a web server for the analysis and retrieval of human mitochondrial DNA sequence variations. Mitochondrion, 11(2), 351-356.
- Fan, L., & Yao, Y. G. (2013). An update to MitoTool: using a new scoring system for faster mtDNA haplogroup determination. Mitochondrion, 13(4), 360-363.
- Family Tree DNA & Greenspan (2006). Sequences Directly Submited by Family Tree DNA on Customers' Behalf. , -, -.
- Van Oven, M., & Kayser, M. (2009). Updated comprehensive phylogenetic tree of global human mitochondrial DNA variation. Human mutation, 30(2), E386-E394.
- Ian Logan's mtDNA Pages
- Ian Logan's Instructions for mtGenome Genbank Donation
- James Lick's mtDNA Utility
- The FTDNA Haplogroup Project for Haplogroup I
- The Wikipedia Article for Haplogroup I
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.
Peoples: Finns and Irish | Places: Finland and Ireland
Last Updated: Last updated: December 15, 2017 at 3:59 am