It has been found in about 6% (2.3% to 16.7%) of modern males sampled in Japan and has been considered to be a Y-DNA haplogroup descended from Jōmon people.[5][6] Elsewhere, it has been observed among academic studies only in one individual in a sample collected on Jeju Island of South Korea[7] and in commercial testing in one individual who has reported an origin in Liaoning province of China and one individual who has reported an origin in Seoul, South Korea.[8]
The MRCA with its sister haplogroup C-V20 dates back to 40,000[1] to 50,000[2] years ago. Diffusion of existing subtypes of C-M8 is estimated to have begun about 12,000 years ago.[3]
C1a1 is found in the Jōmon people and are linked to the Jomon people who came from the south route.
Frequency in Japan
Frequency in samples of Japanese from various regions:[6]
Haplogroup C1a1 (M8) is mostly unique to the Japanese archipelago, and its migration route is enigmatic.
C1a1 is estimated to be one of the common haplogroups among the Jōmon people (about 30% or more), next to D1a2a, D1a1, C2, K, and F.[15]
References
^ abZhong H, Shi H, Qi XB et al. (July 2010). "Global distribution of Y-chromosome haplogroup C-M130 reveals the prehistoric migration routes of African exodus and early settlement in East Asia". J. Hum. Genet. 55 (7): 428–35. doi:10.1038/jhg.2010.40. PMID20448651.
^ abcG. David Poznik, Yali Xue, Fernando L. Mendez, et al., "Punctuated bursts in human male demography inferred from 1,244 worldwide Y-chromosome sequences." Nature Genetics 2016 June ; 48(6): 593–599. doi:10.1038/ng.3559.
^ abcdeHammer MF, Karafet TM, Park H et al. (2006). "Dual origins of the Japanese: common ground for hunter-gatherer and farmer Y chromosomes". J. Hum. Genet. 51 (1): 47–58. doi:10.1007/s10038-005-0322-0. PMID16328082.
^Michael F Hammer; Tatiana M Karafet; Hwayong Park; Keiichi Omoto; Shinji Harihara; Mark Stoneking; Satoshi Horai (2006). “Dual origins of the Japanese: common ground for hunter-gatherer and farmer Y chromosomes”. Journal of Human Genetics 51 (1): 47 - 58. doi:10.1007/s10038-005-0322-0. PMID16328082.
^Tajima, Atsushi; Hayami, Masanori; Tokunaga, Katsushi; Juji, T; Matsuo, M; Marzuki, S; Omoto, K; Horai, S (2004). "Genetic origins of the Ainu inferred from combined DNA analyses of maternal and paternal lineages". Journal of Human Genetics 49 (4): 187–193. doi:10.1007/s10038-004-0131-x. PMID14997363.
^ abcShoji Totsuka, The Super Science High School Consortium, Youichi Sato, and Masashi Tanaka, "A study of the geographic distribution of Y chromosomal and mitochondrial DNA haplogroups in Japanese population by Super Science High School Consortium (SSH)." Anthropological Science (Japanese Series) Vol. 124(2), 85–91, 2016.
^Nonaka I, Minaguchi K, Takezaki N (July 2007). "Y-chromosomal binary haplogroups in the Japanese population and their relationship to 16 Y-STR polymorphisms". Ann. Hum. Genet. 71 (Pt 4): 480–95. doi:10.1111/j.1469-1809.2006.00343.x. PMID17274803.
^Yali Xue, Tatiana Zerjal, Weidong Bao, Suling Zhu, Qunfang Shu, Jiujin Xu, Ruofu Du, Songbin Fu, Pu Li, Matthew E. Hurles, Huanming Yang, and Chris Tyler-Smith, "Male Demography in East Asia: A North–South Contrast in Human Population Expansion Times." Genetics 172: 2431–2439 (April 2006). DOI: 10.1534/genetics.105.054270
^Hirofumi Nohara, Ikuko Maeda, Rinnosuke Hisazumi, Taketo Uchiyama, Hiroko Hirashima, Masahito Nakata, Ohno Rika, Tetsuro Hasegawa, and Kenshi Shimizu, "Geographic distribution of Y-STR haplotypes and Y-haplogroups among Miyazaki Prefecture residents." Japanese Journal of Forensic Science and Technology, Volume 26 (2021), No. 1., p. 17-27. https://doi.org/10.3408/jafst.778
^ abcdefghYouichi Sato, Toshikatsu Shinka, Ashraf A. Ewis, Aiko Yamauchi, Teruaki Iwamoto, and Yutaka Nakahori, "Overview of genetic variation in the Y chromosome of modern Japanese males." Anthropological Science Vol. 122(3), 131–136, 2014. doi:10.1537/ase.140709
^Van Oven M, Van Geystelen A, Kayser M, Decorte R, Larmuseau HD (2014). "Seeing the wood for the trees: a minimal reference phylogeny for the human Y chromosome". Human Mutation. 35 (2): 187–91. doi:10.1002/humu.22468. PMID24166809. S2CID23291764.
^K-M2313*, which as yet has no phylogenetic name, has been documented in two living individuals, who have ethnic ties to India and South East Asia. In addition, K-Y28299, which appears to be a primary branch of K-M2313, has been found in three living individuals from India. See: Poznik op. cit.; YFull YTree v5.08, 2017, "K-M2335", and; PhyloTree, 2017, "Details of the Y-SNP markers included in the minimal Y tree" (Access date of these pages: 9 December 2017)
^ Haplogroup S, as of 2017, is also known as K2b1a. (Previously the name Haplogroup S was assigned to K2b1a4.)
^ Haplogroup M, as of 2017, is also known as K2b1b. (Previously the name Haplogroup M was assigned to K2b1d.)