Y-DNA Haplogroup T and its Subclades - 2011
The entire work is identified by the Version Number and date given on the
Main Page. Directions for citing the document are given at
the bottom of the Main
Version History Last
revision date for this specific page: 19 December 2011
Because of continuing research, the structure of the Y-DNA Haplogroup Tree changes and ISOGG
does its best to keep the tree updated with the latest developments
in the field. The viewer may observe other versions of the tree on the Web. Email
Alice Fairhurst if the differences need
clarification or if you find any broken links on this page.
T L206, L445, L452, L455,
M184/Page34/USP9Y+3178, M193, M272,
L299, L453, L454
T1b1 P322, P328
SNPs under Investigation - Additional testing is needed to confirm adequate positive samples
and/or correct placement on the tree.
and L447 are located in T1b. Listed 30 October 2011.
- L810 is located in T1a. Listed 30 October 2011.
- L490 is downstream of M184 and may be equivalent to M70. Listed 19 December 2011.
- Haplogroup T was formerly called K2 and was first called T in the Karafet et al (2008) paper.
- Identical SNPs that were discovered separately are listed in alphabetical order, not necessarily in
the order of discovery, and separated by "/". Examples M184/USP9Y+3178.
Y-DNA haplogroup T is found at low frequencies
throughout Europe and in parts of the Middle East, North Africa, and West Africa.
A famous person in Haplogroup T was Thomas Jefferson (1743-1826), the third President
of the United States from 1801 to 1809.
Alonso et al,
The Place of the Basques in the European
Y-chromosome Diversity Landscape. (available by subscription) European Journal of
Human Genetics, 13:1293-1302, 2005.
Bortolini et al,
Y-Chromosome Evidence for Differing Ancient Demographic Histories in the Americas.
American Journal of Human Genetics, 73:524�539, (2003).
Cinnioglu et al,
Excavating Y-chromosome Haplotype Strata in Anatolia. (pdf) Human Genetics. 114:127-148, 2004.
Cruciani et al,
A Back Migration from Asia to Sub-Saharan Africa Is Supported
by High-Resolution Analysis of Human Y-Chromosome Haplotypes.
American Journal of Human Genetics, 70:1197-1214, 2002.
Flores et al,
Reduced Genetic Structure of the Iberian Peninsula Revealed by Y-chromosome
Analysis: Implications for Population Demography. (pdf)
European Journal of Human Genetics,
Herrera et al,
Neolithic Patrilineal Signals Indicate that the Armenian Plateau was Repopulated by Agriculturalists.
European Journal of Human Genetics, 10.1038/ejhg.2011.192, 2011.
Karafet et al,
New Binary Polymorphisms Reshape and Increase Resolution of the Human Y-Chromosomal Haplogroup
Tree. Abstract. Genome Research, published online April 2, 2008.
Kivisild et al,
The Genetic Heritage of the Earliest Settlers Persists in Both Indian Tribal and Caste
Populations. (pdf) American Journal of Human Genetics, 72:313-332, 2003.
Mendez et al,
Increased Resolution of Y Chromosome Haplogroup T Defines Relationships among Populations of the Near East,
Europe, and Africa. Human Biology 83(1):39-53, 2011.
Regueiro et al,
Iran: Tricontinental Nexus for Y-Chromosome Driven Migration. (abstract)
Human Heredity, Vol. 61, No 3, 132-143, 2006.
Semino et al,
Ethiopians and Khoisan Share the Deepest Clades of the Human Y-Chromosome Phylogeny. (pdf)
American Journal of Human Genetics, 70:265-268, 2002.
Rozen et al,
Remarkably Little Variation in Proteins Encoded by the Y Chromosome's Single-Copy Genes, Implying Effective
Purifying Selection. American Journal of Human Genetics. 2009 December 11; 85(6): 923-928.
Sengupta et al,
Polarity and Temporality of High Resolution Y-chromosome Distributions in India
Identify Both Indigenous and Exogenous Expansions and Reveal Minor Genetic Influence
of Central Asian Pastoralists. (pdf)
American Journal of Human Genetics, 78:202-221, 2006.
Shen et al, Reconstruction
of Patrilineages and Matrilineages of Samaritans and other Israeli Populations from Y-Chromosome
and Mitochondrial DNA Sequence Variation. (pdf) Human Mutation, 24:248-260, 2004.
Su et al,
Y-chromosome Evidence for a Northward Migration of Modern Humans into Eastern Asia
during the Last Ice Age. (pdf) American Journal of Human Genetics, 65:1718-1724, 1999.
Thangaraj et al,
Genetic Affinities of the Andaman Islanders, a Vanishing Human Population. (pdf)
Current Biology, 13:86-93, 2003.
ISOGG Wiki - What you need to know about Genetic Genealogy.
The Y-DNA Haplogroup T (former K2) Project,
Gareth Henson, Peter Hrechdakian.
Haplogroup T - Walk Through the Y Project,
Paul Woods, Doyle Mathis, Gareth Henson.
Corrections/Additions made since 1 January 2011:
- Added additional haplogroup project on 22 March 2011.
- Added Rozen et al (2009) on 24 March 2011.
- Added Page2, Page21, Page34, Page46 on 29 March 2011.
- Added L299, P317, P321, P322, P327, P328, P330, Page78, Page129 on 3 April 2011.
- Added Mendez et al (2011) on 26 April 2011.
- Added L453, L454 on 4 September 2011.
- Added L445, L446, L447, L452, L455, L490, L810, L811 on 30 October 2011.
- L299 is no longer provisional; P330 is colored private and P321 as provisional on 19 November 2011.
- L811 is moved from Investigation to LT mode of the main tree on 19 November 2011.
- Added Herrera et al (2011) on 19 November 2011.
- Moved L452 to the tree and rewrote the investigation note for L490 on 19 December 2011.
Contact Person for Haplogroup T: