Y-DNA Haplogroup Tree 2007
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 Page.
Version History     Last revision date for this specific page: 17 October 2007

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.
The haplogroup (clade) name is given first, followed by a list of one of more SNPs*. Some list items have more than one name, in which case the item is followed by its alias in parentheses. To find an individual's haplogroup, go to the most downstream positive (derived) SNP. To see the subclades and their SNPs, click on the haplogroup name.
* SNP has become the common phrase for those markers listed after clades/subclades; see UEP and SNP in the glossary.

LINKS:  Main Page     SNP Index     Papers Cited     Glossary     Listing Criteria
CLADE/SUBCLADE SYMBOLS:  Added  Renamed 
SNP SYMBOLS:  Not on 2006 tree  Confirmed within subclade  Provisional  Private

       A   M91
       BR    SRY1532.1/SRY10831.1, M42, M94, M139, M299    (This category is also referred to as YxA.)
             B   M60, M181
             CR    M168, M294, P9    
                    C   M130/RPS4Y, M216
                   DE    M1/YAP, M145, M203
                          D    M174
                          E     M40/SRY4064/SRY8299, M96, P29
                    F     P14, M89, M213, M235
                          G     M201, U2, U3, U6, U7, U12, U17
                          H    M69
                          IJ    S2, S22
                                 I     M170, M258, P19, U179
                                 J     12f2.1, M304, S6, S34, S35
                          K     M9
                                 L     M11, M20, M22, M61, M185, M295
                                 M     M4/M296, M5, M106, M186, M189, P35
                                 NO    M214
                                       N     LLY22g, M231
                                       O     M175
                                 P     92R7, M45, M74/N12, P27
                                       Q     M242, MEH2, P36
                                       R     M207/UTY2, M306/S1, S4, S8, S9

NOTES:

Y-DNA haplogroup descriptions are provided on each haplogroup page. The combined haplogroups are the only ones whose description appears on this page.

The BR haplogroup split off from haplogroup A 55,000 years before present (bp). It probably appeared in North East Africa. The CR haplogroup was the common ancestor of all people who migrated outside of Africa until recent times. The defining mutation occurred 31-55,000 years bp in North East Africa and is still most common in Africa today in Ethiopia and Sudan. The DE haplogroup appeared approximately 50,000 years bp in North East Africa and subsequently split into haplogroup E that spread to Europe and Africa and haplogroup D that rapidly spread along the coastline of India and Asia to North Asia. The IJ haplogroup characterizes part of the second wave of emigration from Africa that occurred via the Middle East 45,000 years bp and defines two branches I and J that emigrated northwards and eastwards into Europe. The J branch subsequently split again and contributed to the current North African population. The NO haplogroup appeared approximately 35,000-40,000 years bp in a region east of the Aral sea; subsequent branches spread to North Asia (N) and another branch (O) to South Asia via North India.

References:

Butler, Recent Developments in Y-Short Tandem Repeat and Y-Single Nucleotide Polymorphism Analysis. (pdf) Forensic Sciece Review, Vol. 15, No. 2, 100-111, 2003.
Chandrasekar et al, YAP Insertion Signature in South Asia. Annals of Human Biology, 34(5);582-6, 2007.
Hammer et al, Hierarchical Patterns of Global Human Y-Chromosome Diversity. (pdf) Molecular Biology and Evolution, 18:1189-1203, 2001.
Hammer et al, Population Structure of Y chromosome SNP Haplogroups in the United States and Forensic Implications for Constructing Y Chromosome STR Databases. Forensic Science International, (in press), 2005.
Jobling et al, The Human Y Chromosome: An Evolutionary Marker Comes of Age. Nature/Reviews/Genetics, 4:598-612, 2003.
Kayser et al, Melanesian and Asian Origins of Polynesians: mtDNA and Y-Chromosome Gradients across the Pacific. MBE Advance Access published August 21, 2006.
Rootsi S, Human Y Chromosomal Variations in European Populations (dissertation) Council of the Institute of Molecular and Cell Biology, University of Tartu, Oct 2004.
Underhill et al, The Phylogeography of Y Chromosome Binary Haplotypes and the Origins of Modern Human Populations. (pdf) Annals of Human Genetics, 65:43-62, 2001.
Underhill et al, Y Chromosome Sequence Variation and the History of Human Populations. (pdf) Nature Genetics, 26: 358-361, November 2000.
Y Chromosome Consortium (YCC), A Nomenclature System for the Tree of Human Y-Chromosomal Binary Haplogroups. Genome Research: 12:339-348, 2002.

Additional Resources:
Charles Kerchner, Y-DNA Haplogroup Descriptions

Corrections/Additions made since 20 December 2006:

Contact person for Haplogroup Main Tree: John McEwan

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Copyright 2007, International Society of Genetic Genealogy. All Rights Reserved.