Comment on "Reconstructing the origin of Andaman islanders".
نویسندگان
چکیده
On the basis of mitochondrial DNA sequence analyses, Thangaraj et al. (Brevia, 13 May 2005, p. 996) proposed that Andaman islanders descended from the first humans to migrate out of Africa. We identified mitochondrial DNA from two northeast Indian Rajbanshi individuals that shares three specific mutations with the M31a lineage observed in the Great Andamanese, which suggests that the predecessor of haplogroup M31 originated on the Indian subcontinent.
منابع مشابه
Reconstructing the origin of Andaman Islanders.
The origin of the Andaman "Negrito" and Nicobar "Mongoloid" populations has been ambiguous. Our analyses of complete mitochondrial DNA sequences from Onges and Great Andaman populations revealed two deeply branching clades that share their most recent common ancestor in founder haplogroup M, with lineages spread among India, Africa, East Asia, New Guinea, and Australia. This distribution sugges...
متن کاملThe skeletal phenotype of "negritos" from the Andaman Islands and Philippines relative to global variation among hunter-gatherers.
The "negrito hypothesis" suggests that populations of small-bodied foragers in South and Southeast Asia who share common phenotypic characteristics may also share a common, ancient origin. The key defining characteristics of the "negrito" phenotype, small body size, dark skin, and tightly curled hair, have been interpreted as linking these populations to sub-Saharan Africans. The underlying ass...
متن کاملThe genetic origins of the Andaman Islanders.
Mitochondrial sequences were retrieved from museum specimens of the enigmatic Andaman Islanders to analyze their evolutionary history. D-loop and protein-coding data reveal that phenotypic similarities with African pygmoid groups are convergent. Genetic and epigenetic data are interpreted as favoring the long-term isolation of the Andamanese, extensive population substructure, and/or two tempor...
متن کاملThe Andaman Islanders in a regional genetic context: reexamining the evidence for an early peopling of the archipelago from South Asia.
The indigenous inhabitants of the Andaman Islands were considered by many early anthropologists to be pristine examples of a "negrito" substrate of humanity that existed throughout Southeast Asia. Despite over 150 years of research and study, questions over the extent of shared ancestry between Andaman Islanders and other small-bodied, gracile, dark-skinned populations throughout the region are...
متن کاملMolecular Relatedness of The Aboriginal Groups of Andaman and Nicobar Islands with Similar Ethnic Populations
The aboriginal tribal groups living in the Andaman and Nicobar Islands are thought to be the descendants of people who were part of the early human dispersal into the Southeast Asia. However, the origin of the tribes of Andaman, the region from where the aboriginals arrived and the route of their migration are still a matter of great speculation. To explore the origin and affinities of the Anda...
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عنوان ژورنال:
- Science
دوره 311 5760 شماره
صفحات -
تاریخ انتشار 2006