P   92R7_1, 92R7_2, L138, L268, L405, L471/PF5989, L536/PF5860, L721/PF6020,
       L741, L768/PF5976/YSC0000274, L779/PF5907/YSC0000251, L781/PF5875/YSC0000255,
       M45/PF5962, M74/N12, P27.1_1/P207, P27.1_2, P69, P226/PF5879, P228/PF5927,
       P230/PF5925, P235/PF5946, P237/PF5873, P239, P240/PF5897, P243/PF5874, P244,
       P281/PF5941, P282/PF5932, P283/PF5966, P284, P295/PF5866/S8, Page83, V231
�    P*   -
�    Q    M242
�    R    M207/Page37/UTY2, P224, P227, P229, P232, P280, P285, S4, S9

NOTES:

• Identical SNPs that were discovered separately are listed in alphabetical order, not necessarily in the order of discovery, and separated by "/". Examples: M74/N12, P27.1/P207, M207/UTY2, M306/S1.

Y-DNA haplogroup P, an offshoot of Haplogroup K(xLT), originated in Central Asia some 35,000 years ago; sites in Uzbekistan, Kazakhstan and southern Siberia have been offered as the likely point of first appearance. Haplogroup P is best represented by its two immediate subclades, haplogroups Q and R, which expanded to become the dominant haplogroups in, respectively, the Americas and Europe.

Behar et al, Contrasting Patterns of Y Chromosome Variation in Ashkenazi Jewish and Host Non-Jewish European Populations. (pdf) Hum Genet 114:354-365, 2004.
Behar et al, Genome-Wide Structure of the Jewish People. Nature, 446:238-42, 2010.
Bortolini et al, Y-Chromosome Evidence for Differing Ancient Demographic Histories in the Americas. American Journal of Human Genetics, 73:524-539, 2003.
Capelli et al, Population Structure in the Mediterranean Basin: A Y Chromosome Perspective. (pdf) Annals of Human Genetics, 2005.
Delfin et al, The Y Chromosome Landscape of the Philippines: Extensive Heterogeneity and Varying Genetic Affinities of Negrito and Non-Negrito Groups. (abstract) European Journal of Human Genetics, 19:224-30, 2011.
Deng et al, Evolution and Migration History of the Chinese Population Inferred from the Chinese Y-chromosome Evidence. (pdf) Journal of Human Genetics, 49:339-348, 2004.
Derenko et al, Contrasting patterns of Y-Chromosome variation in South Siberian populations from Baikal and Altai-Sayan regions, Human Genetics 118: 591-604, 2006.
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, 12:855-863, 2004.
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. Supplementary Material.
Kayser et al. Reduced Y-Chromosome, but Not Mitochondrial DNA, Diversity in Human Populations from West New Guinea. American Journal of Human Genetics, 72:281-302, 2003.
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.
Nasidze et al, MtDNA and Y-chromosome Variation in Kurdish Groups. (abstract) Annals of Human Genetics, 69:401-412, 2005.
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.
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.
Xue et al, A Spatial Analysis of Genetic Structure of Human Populations in China Reveals Distinct Difference between Maternal and Paternal Lineages. European Journal of Human Genetics, 16:705-17, 2008.

Additional Resources:
ISOGG Wiki - What you need to know about Genetic Genealogy.

Corrections/Additions made since 1 January 2013:

• Added PF5860, PF5866, PF5873, PF5874, PF5875, PF5879, PF5897, PF5907, PF5925, PF5927, PF5932, PF5941, PF5946, PF5962, PF5966, PF5976, PF5989, PF6020, YSC0000251, YSC0000255, YSC0000274 on 4 January 2013.

Contact Person for Haplogroup P: David Reynolds

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