Peopling of India: Ancient DNA perspectives
2019
Thangaraj, K | Rai, Niraj
To reconstruct and explain patterns of genetic diversity of modern humans, understanding their past and present genetic profile is crucial. While genomes of contemporary people can provide information about present day population structure, analysis of ancient genomes may provide unprecedented insights about the past demographic events that have shaped the contemporary gene pool. Population genetics has recently witnessed an explosion in studies on ancient human population histories, primarily from Europe and America. South Asia has no representation in the ancient genomics literature, despite the wealth of archaeological richness in the form of human skeletal remains that exist in collections all over the country. Representing one-fifth of present day humanity calls for understanding the demographic history of south Asia not merely as a prerequisite but as an urgent need to understand its genetic variations on a global scale. Although the overall picture is taking form, new archaeological and genetic information from the region has started to reveal a more complex scenario of ancient human migrations and admixtures than was ever known before. In this article, we discuss a meaningful insight on the current status of ancient DNA (aDNA) research in India. We have also summarized a few but important aDNA studies, which have been successfully carried out in India. Furthermore, we have highlighted the potential opportunity of aDNA research in the Indian subcontinent.
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