From Social to Genetic Structures in Central Asia

@article{Chaix2007FromST,
  title={From Social to Genetic Structures in Central Asia},
  author={Rapha{\"e}lle Chaix and Llu{\'i}s Quintana-Murci and Tatyana Hegay and Michael F. Hammer and Zahra Mobasher and Fr{\'e}d{\'e}ric Austerlitz and Evelyne Heyer},
  journal={Current Biology},
  year={2007},
  volume={17},
  pages={43-48}
}

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References

SHOWING 1-10 OF 37 REFERENCES

Molecular analysis reveals tighter social regulation of immigration in patrilocal populations than in matrilocal populations.

A Bayesian analysis of mitochondrial and Y chromosome diversity in three matrilocal and three patrilocal groups from northern Thailand is performed to infer the number of males and females arriving in these populations each generation and to estimate the age of their range expansion.

The genetic or mythical ancestry of descent groups: lessons from the Y chromosome.

It is shown that, although people from the same lineage and clan share generally a recent common ancestor, no common ancestry is observed at the tribal level, and a tribe might be a conglomerate of clans who subsequently invented a mythical ancestor to strengthen group unity.

Trading genes along the silk road: mtDNA sequences and the origin of central Asian populations.

It seems unlikely that altitude has exerted a major selective pressure on mitochondrial genes in central Asian populations, because lowland and highland Kirghiz mtDNA sequences are very similar, and the analysis of molecular variance has revealed that the fraction of mitochondrial genetic variance due to altitude is not significantly different from zero.

Sex-specific migration patterns in Central Asian populations, revealed by analysis of Y-chromosome short tandem repeats and mtDNA.

A dramatic reduction of the haplotype genetic diversity was observed in the villages at high altitude, especially in the highland Kirghiz, when compared with the village at low altitude, which suggests a male founder effect in the settlement of high-altitude lands.

Village and tribal genetic distances among American Indians, and the possible implications for human evolution.

  • J. NeelR. Ward
  • Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 1970
By the criterion of changes in gene frequency in polymorphic genetic systems, the maximal rate of evolution in the American Indian has been approximately 100 times more rapid than the mean rate suggested by calculations based on amino acid substitutions in certain polypeptides of a variety of organisms.

Admixture, migrations, and dispersals in Central Asia: evidence from maternal DNA lineages

The present results suggest that the mtDNA found out of Africa might be the result of a maturation phase, presumably in the Middle East or eastern Africa, that led to haplogroups M and N, and subsequently expanded into Eurasia, yielding a geographically structured group of external branches of these two haplog groups in western and eastern Eurasia.

The impact of random and lineal fission of the genetic divergence of small human groups: a case study among the Yanomama.

The term lineal fission effect is used to describe the genetic consequences of nonrandom assortment and contrast these results with those derived from random assortment, which appears to have been somewhat greater than would be expected from classical drift arguments.

Where west meets east: the complex mtDNA landscape of the southwest and Central Asian corridor.

A number of deep-rooting lineages, whose relative clustering and coalescent ages suggest an autochthonous origin in the southwestern Asian corridor during the Pleistocene are observed.

A genetic landscape reshaped by recent events: Y-chromosomal insights into central Asia.

Two particularly striking features were seen: an extremely high level of Y-chromosomal differentiation between geographically close populations, accompanied by low diversity within some populations, and the occurrence of several recent bottlenecks or founder events.

Genetic Evidence for the Demic Diffusion of Agriculture to India

A formal test of the demic versus cultural diffusion models of the spread of agriculture in India reveals that recent south Indian agriculturalists are overall genetically more similar to traditional agriculturalists than to traditional hunter-gatherers.