Haplogroup A20 is an Asia branch on the maternal tree of humanity. Its age has not yet been determined.
Published research comes from two studies. The first is medical and found it in a Japanese participant (Bilal et al., 2008). The second found a member in a Han Chinese population living in Denver, Colorado (Zheng et al., 2011).
From Geno 2 data, there is one person with maternal origins in Japan.
It is likely that the first woman to have the genetic markers for this line lived in what is now China. From there, some of her descendants spread to Japan.
mtDNA Haplogroup A20 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.
|16||A20||A14696G||Released 19 Feb 2014|
|17||A20||A14696G||Released 18 Feb 2016|
mtDNA Haplogroup A20 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 results over to build 17.
|Hg ID||Origin||Publication||Hg BLD16||Hg BLD17||Hg YFull||Missing Variants||Additional Variants|
|Hap5005468||-||Bilal et al., 2008||A20||-||none||A20:315.1C, 523-524d, 3492, 8289.1CCCCCTCTA, 8886, 11212, 12903, 14178|
|Hap5022232||Zheng et al., 2011||A20||none||A20:8860N, 8861N, 8862N, 16148, 16519|
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.
- Bilal, E., Rabadan, R., Alexe, G., Fuku, N., Ueno, H., Nishigaki, Y., Fujita, Y., Ito, M., Arai, Y., Hirose, N. and Ruckenstein, A. (2008). Mitochondrial DNA Haplogroup D4a Is a Marker for Extreme Longevity in Japan. PLoS ONE, 3(6), e2421.
- 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.
- Van Oven, M., & Kayser, M. (2009). Updated comprehensive phylogenetic tree of global human mitochondrial DNA variation. Human mutation, 30(2), E386-E394.
- Zheng, H.X., Yan, S., Qin, Z.D., Wang, Y., Tan, J.Z., Li, H. and Jin, L. (2011). Major Population Expansion of East Asians Began before Neolithic Time: Evidence of mtDNA Genomes. PLoS ONE, 6(10), e25835+.
- Ian Logan’s mtDNA Pages
- Ian Logan’s Instructions for mtGenome Genbank Donation
- James Lick’s mtDNA Utility
- The FTDNA Haplogroup Project for Haplogroup A2
- The Wikipedia Article for Haplogroup A
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: Chinese Han | Places: China and Japan
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