Genetics and archaeogenetics of South Asia
9 quotes
Biography
"In reading the genetics literature on South Asia, it is very clear that many of the studies actually start out with some assumptions that are clearly problematic, if not in some cases completely untenable. Perhaps the single most serious problem concerns the assumption, which many studies actually start with as a basic premise, that the Indo-Aryan invasions are a well-established (pre)historical reality. The studies confirm such invasions in large part because they actually assume them to begin with."
"[T]he present-day linguistic affinities of different Indian populations per se are perhaps among the most ambiguous and even potentially controversial lines of evidence in the reconstruction of prehistoric demographic processes in India."
"Most genetic studies are built on unstated, unproven (and often unwitting) assumptions: not only that migration is the supreme mechanism to account for the spread of genes and languages, but also that, in India’s case, the said genes could only have spread unidirectionally. The studies then proceed to marshal evidence to ‘prove’ the assumption, in a classic case of circularity."
"South Asia has indeed been at the crossroads for much of modern human prehistory."
"The data provide no support for any model of massive migration and gene flow between the oases of Bactria and the Indus Valley. Rather, patterns of phenetic affinity best conform to a pattern of long-standing, but low-level bidirectional mutual exchange."
"Overall percentages [of steppe ancestry] are generally very low, and in South Asia also too late for a plausible first arrival of Indic languages here (let alone Indo-Iranic as a whole). But however small and late, and however implausible that they replaced all languages from Iran right across to northern India, that is what has to be claimed for these weak signals, for the Steppe hypothesis to be right."
"In short, there is no evidence of demographic disruptions in the northwestern sector of the subcontinent during and immediately after the decline of the Harappan culture... All prehistoric human remains recovered thus far from the Indian subcontinent are phenotypically identifiable as ancient South Asians... How could one recognize an Aryan, living or dead, when the biological criteria for Aryanness are non-existent?"
"The anthropologists who have recently described the skeletons from Harappa remark that there, as at Lothal, the population would appear, on the available evidence, to have remained more or less stable to the present day."
"Genetic variation in contemporary South Asian populations follows a northwest to southeast decreasing cline of shared West Eurasian ancestry."