Genetic ancestries in northwest Cambodia

Black, Michael; Dufall, K.; Wise, Cheryl; Sullivan, Sheena G.; Bittles, Alan H.

doi:10.1080/03014460600882561

Cited by 12 publications

(12 citation statements)

References 21 publications

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“…Since we do not find any root lineage of M31a1 or M32 in Myanmar populations, suggesting Myanmar unlikely being the source place of haplogroup M31 or M32. After re-analyzing additional 4180 mtDNAs from East Asia (Qian et al, 2001;Wen et al, 2004;Li et al, 2007;Gan et al, 2008;Zhao et al, 2009), mainland Southeast Asia (Black et al, 2006;Li et al, 2007;Irwin et al, 2008;Lertrit et al, 2008;Zimmermann et al, 2009;Peng et al, 2010) and Island Southeast Asia (Tajima et al, 2004;Hill et al, 2006Hill et al, , 2007, we did not observe any M31 or M32 mtDNA either, again substantiating our observation.…”

Section: Resultssupporting

confidence: 90%

Mitochondrial DNA evidence supports northeast Indian origin of the aboriginal Andamanese in the Late Paleolithic

Wang

Mitra

Chaudhuri

et al. 2011

Journal of Genetics and Genomics

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Section: Resultssupporting

confidence: 90%

Mitochondrial DNA evidence supports northeast Indian origin of the aboriginal Andamanese in the Late Paleolithic

Wang

Mitra

Chaudhuri

et al. 2011

Journal of Genetics and Genomics

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“…Coalescence times of mtDNA haplogroups of interest were calculated by ρ statistic method [28]–[29] using recently corrected calibrated mutation rate: 18,845 years per mutation in HVS-I (16090–16365) [30]. Reference population data on the Y chromosomes [14], [18], [31]–[44] and mtDNA [8]–[10], [45]–[69] were retrieved from the literature. Time estimations for main Y chromosomal lineages were made using 15 STRs (excluding DYS385a and DYS385b) in BATWING [70] under a model of exponential growth from an initially constant-sized population.…”

Section: Methodsmentioning

confidence: 99%

Genetic Structure of Qiangic Populations Residing in the Western Sichuan Corridor

Wang

Shrestha

et al. 2014

PLoS ONE

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The Qiangic languages in western Sichuan (WSC) are believed to be the oldest branch of the Sino-Tibetan linguistic family, and therefore, all Sino-Tibetan populations might have originated in WSC. However, very few genetic investigations have been done on Qiangic populations and no genetic evidences for the origin of Sino-Tibetan populations have been provided. By using the informative Y chromosome and mitochondrial DNA (mtDNA) markers, we analyzed the genetic structure of Qiangic populations. Our results revealed a predominantly Northern Asian-specific component in Qiangic populations, especially in maternal lineages. The Qiangic populations are an admixture of the northward migrations of East Asian initial settlers with Y chromosome haplogroup D (D1-M15 and the later originated D3a-P47) in the late Paleolithic age, and the southward Di-Qiang people with dominant haplogroup O3a2c1*-M134 and O3a2c1a-M117 in the Neolithic Age.

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“…Studies of mtDNA diversity have shown that the AA speakers from Southeast Asia and the Indian subcontinent carry mtDNAs of different sources [7,9,14,16,29,30]. Although the data on Southeast Asian populations, which speak languages of the Mon-Khmer branch of the AA tree, are still somewhat limited, it seems safe to conclude, that their mtDNA characteristics are similar to those of the surrounding Southeast Asian populations, and distinct from AA tribes of India (Munda-speakers) [30]. Similarly, the Indian tribes speaking different Munda languages show generally the same mtDNA haplogroup composition as the Indo European and Dravidic groups of India [9,14,16,29].…”

Section: Introductionmentioning

confidence: 99%

Phylogeography of mtDNA haplogroup R7 in the Indian peninsula

et al. 2008

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BackgroundHuman genetic diversity observed in Indian subcontinent is second only to that of Africa. This implies an early settlement and demographic growth soon after the first 'Out-of-Africa' dispersal of anatomically modern humans in Late Pleistocene. In contrast to this perspective, linguistic diversity in India has been thought to derive from more recent population movements and episodes of contact. With the exception of Dravidian, which origin and relatedness to other language phyla is obscure, all the language families in India can be linked to language families spoken in different regions of Eurasia. Mitochondrial DNA and Y chromosome evidence has supported largely local evolution of the genetic lineages of the majority of Dravidian and Indo-European speaking populations, but there is no consensus yet on the question of whether the Munda (Austro-Asiatic) speaking populations originated in India or derive from a relatively recent migration from further East.ResultsHere, we report the analysis of 35 novel complete mtDNA sequences from India which refine the structure of Indian-specific varieties of haplogroup R. Detailed analysis of haplogroup R7, coupled with a survey of ~12,000 mtDNAs from caste and tribal groups over the entire Indian subcontinent, reveals that one of its more recently derived branches (R7a1), is particularly frequent among Munda-speaking tribal groups. This branch is nested within diverse R7 lineages found among Dravidian and Indo-European speakers of India. We have inferred from this that a subset of Munda-speaking groups have acquired R7 relatively recently. Furthermore, we find that the distribution of R7a1 within the Munda-speakers is largely restricted to one of the sub-branches (Kherwari) of northern Munda languages. This evidence does not support the hypothesis that the Austro-Asiatic speakers are the primary source of the R7 variation. Statistical analyses suggest a significant correlation between genetic variation and geography, rather than between genes and languages.ConclusionOur high-resolution phylogeographic study, involving diverse linguistic groups in India, suggests that the high frequency of mtDNA haplogroup R7 among Munda speaking populations of India can be explained best by gene flow from linguistically different populations of Indian subcontinent. The conclusion is based on the observation that among Indo-Europeans, and particularly in Dravidians, the haplogroup is, despite its lower frequency, phylogenetically more divergent, while among the Munda speakers only one sub-clade of R7, i.e. R7a1, can be observed. It is noteworthy that though R7 is autochthonous to India, and arises from the root of hg R, its distribution and phylogeography in India is not uniform. This suggests the more ancient establishment of an autochthonous matrilineal genetic structure, and that isolation in the Pleistocene, lineage loss through drift, and endogamy of prehistoric and historic groups have greatly inhibited genetic homogenization and geographical uniformity.

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Genetic ancestries in northwest Cambodia

Cited by 12 publications

References 21 publications

Mitochondrial DNA evidence supports northeast Indian origin of the aboriginal Andamanese in the Late Paleolithic

Mitochondrial DNA evidence supports northeast Indian origin of the aboriginal Andamanese in the Late Paleolithic

Genetic Structure of Qiangic Populations Residing in the Western Sichuan Corridor

Phylogeography of mtDNA haplogroup R7 in the Indian peninsula

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