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MtDNA hg M7 in Koreans
Topic Started: May 16 2018, 03:54:18 PM (41 Views)
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The Right Hand
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Derenko et al. 2007, p. 13:
Quote:
 
M7a, M7b2, and M7c1b are found almost exclusively in Korea and Japan, and M7b1 is characteristic of Chinese populations, whereas M7c1c is specific to Island Southeast Asia.


van Driem 2016, p. 475
Quote:
 
Mitochondrial haplogroup M7 has a southern distribution in East Asia, especially in the Yellow Sea littoral. Its daughter groups M7a and M7b2, specifc to Japanese and Korean populations, attest to an ancient contribution to the modern Japanese mitochondrial DNA pool. The estimated coalescence times for the subclades M7a, M7b, and M7c range between 6,000 and 18,000 years. This date suggests either that these star-like clades refect a resettlement process around the Sea of Japan from the south after the Last Glacial Maximum, contemporary with the spread of microblades of the Suyanggae type and before the onset of the Jōmon culture, or that M7a and M7b entered Japan during initial settlement over 30,000 years ago and underwent a genetic bottleneck at the time of the Last Glacial Maximum.


pooled southern Korean sample of Hong et al. 2014:
n=708
M7 in total: 54=7,6%
(unfortunately no higher resolution according to regions)

pooled southern Korean sample of Lee Hwan-Young et al. 2006:
n=694
M7 in total: 54=7,8%
M7a*+M7a1: 1+8=9=1,3%
(M7b1: 1)
M7b2: 24=3,5%
M7c*+M7c1: 1+19=20=2,9%

Gwangju and Seoul pooled by Umetsu et al. 2005:
n=203 (originally, there were 117 samples from Gwangju and 109 from Seoul according to Umetsu et al. 2001)
M7 in total: 21=10,3%
M7a: 3=1,5%
M7b: 9=4,4%
M7c: 9=4,4%

"volunteers" originally examined by a team in Chungcheongnam-do, Kim et al. 2000 partly re-examined by Jin et al. 2009:
n=185
M7 in total: 19=10,3%
M7a1: 7=3,8%
(M7b1: 1)
M7b2: 4=2,2%
M7c*+M7c1: 1+6=7=3,8%

(Neimenggu Korean sample of Kong et al. 2003:
n=48
M7a1: 1
M7b2: 2
M7c: 1)

==> So far, it seems as if there could be regionally relevant patterns besides a general pattern when one compares M7 as a whole in Korea with M7 in Japanese, Chinese and RFE populations.

Sources:
Derenko et al. 2007: "Phylogeographic Analysis of Mitochondrial DNA in Northern Asian Populations"; doi: 10.1086/522933
Jin Han-Jun et al. 2009: "The Peopling of Korea Revealed by Analyses of Mitochondrial DNA and Y-Chromosomal Markers"; doi: 10.1371/journal.pone.0004210
Kim Wook et a. 2000: "Y chromosomal DNA variation"
Kong et al. 2003: "Mitochondrial DNA sequence polymorphisms of five ethnic populations from northern China"; doi: 10.1007/s00439-003-1004-7
Lee Hwan-Young et al. 2006: "East Asian mtDNA haplogroup determination in Koreans"; doi: 10.1002/elps.200600151
Umetsu et al. 2001: "Multiplex amplified product-length polymorphism analysis for rapid detection of human mitochondrial DNA variations"
Umetsu et al. 2005: "Multiplex amplified product-length polymorphism analysis"; doi: 10.1002/elps.200406129
van Driem 2016: "The eastern himalayan Corridor in Prehistory"
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