Polarity and temporality of high-resolution y-chromosome distributions in India identify both indigenous and exogenous expansions and reveal minor genetic influence of Central Asian pastoralists.
The reappraisal indicates that pre-Holocene and Holocene-era--not Indo-European--expansions have shaped the distinctive South Asian Y-chromosome landscape.
Origin, diffusion, and differentiation of Y-chromosome haplogroups E and J: inferences on the neolithization of Europe and later migratory events in the Mediterranean area.
The phylogeography of Y-chromosome haplogroups E and J was investigated in >2400 subjects from 29 populations, mainly from Europe and the Mediterranean area but also from Africa and Asia, revealing spatial patterns that are consistent with a Levantine/Anatolian dispersal route to southeastern Europe.
Excavating Y-chromosome haplotype strata in Anatolia
This comprehensive characterization of Y-chromosome heritage addresses many multifaceted aspects of Anatolian prehistory, including: the most frequent haplogroup, J, splits into two sub-clades, one of which (J2) shows decreasing variances with increasing latitude, compatible with a northward expansion.
The genetic heritage of the earliest settlers persists both in Indian tribal and caste populations.
Results show that Indian tribal and caste populations derive largely from the same genetic heritage of Pleistocene southern and western Asians and have received limited gene flow from external regions since the Holocene.
Phylogeography of Y-chromosome haplogroup I reveals distinct domains of prehistoric gene flow in europe.
Haplogroup I, the only major clade of the Y phylogeny that is widespread over Europe but virtually absent elsewhere, is analyzed, in detail, and it is revealed that it underwent a postglacial expansion and marked the human colonization of Sardinia approximately 9,000 years ago.
A major Y-chromosome haplogroup R1b Holocene era founder effect in Central and Western Europe
Within the M412 dichotomy, the major S116 sub-clade shows a frequency peak in the upper Danube basin and Paris area with declining frequency toward Italy, Iberia, Southern France and British Isles, and more complex pre-Neolithic scenarios remain possible for the L23(xM412) components in Southeast Europe and elsewhere.
Distinguishing the co-ancestries of haplogroup G Y-chromosomes in the populations of Europe and the Caucasus
No clinal patterns were detected suggesting that the distributions are rather indicative of isolation by distance and demographic complexities, and the P303 SNP defines the most frequent and widespread G sub-haplogroup.
Differential Y‐chromosome Anatolian Influences on the Greek and Cretan Neolithic
Two distinctive haplogroups have demographic properties consistent with Bronze Age expansions in Crete, arguably from NW/W Anatolia and Syro‐Palestine, while a later mainland contribution to Crete is indicated by relative frequencies of V13.
The phylogenetic and geographic structure of Y-chromosome haplogroup R1a
The spatial frequency distributions of R1a sub-haplogroups conclusively indicate two major groups, one found primarily in Europe and the other confined to Central and South Asia.
Separating the post-Glacial coancestry of European and Asian Y chromosomes within haplogroup R1a
- P. Underhill, Natalie M. Myres, T. Kivisild
- BiologyEuropean Journal of Human Genetics
- 1 September 2010
The diversity and frequency profiles of M458 suggest its origin during the early Holocene and a subsequent expansion likely related to a number of prehistoric cultural developments in the region, and the virtual absence of M 458 chromosomes outside Europe speaks against substantial patrilineal gene flow from East Europe to Asia, including to India, at least since the mid-Holocene.