Reconstructing Indian-Australian phylogenetic link

An early dispersal of biologically and behaviorally modern humans from their African origins to Australia, by at least 45 thousand years via southern Asia has been suggested by studies based on morphology, archaeology and genetics. However, mtDNA lineages sampled so far from south Asia, eastern Asia...

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Bibliographic Details
Published in:BMC evolutionary biology 2009-07, Vol.9 (1), p.173-173, Article 173
Main Authors: Kumar, Satish, Ravuri, Rajasekhara Reddy, Koneru, Padmaja, Urade, B P, Sarkar, B N, Chandrasekar, A, Rao, V R
Format: Article
Language:English
Subjects:
Asian People - genetics
Australia
Australian Aboriginal and Torres Strait Islander Peoples
Australian aborigines
DNA, Mitochondrial - genetics
Evolution, Molecular
Genetic aspects
Genetics, Population - methods
Genome, Mitochondrial
Humans
India
Indians
Mitochondrial DNA
Phylogeny
Physiological aspects
Polymorphism, Genetic
Sequence Analysis, DNA
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Summary:An early dispersal of biologically and behaviorally modern humans from their African origins to Australia, by at least 45 thousand years via southern Asia has been suggested by studies based on morphology, archaeology and genetics. However, mtDNA lineages sampled so far from south Asia, eastern Asia and Australasia show non-overlapping distributions of haplogroups within pan Eurasian M and N macrohaplogroups. Likewise, support from the archaeology is still ambiguous. In our completely sequenced 966-mitochondrial genomes from 26 relic tribes of India, we have identified seven genomes, which share two synonymous polymorphisms with the M42 haplogroup, which is specific to Australian Aborigines. Our results showing a shared mtDNA lineage between Indians and Australian Aborigines provides direct genetic evidence of an early colonization of Australia through south Asia, following the "southern route".
ISSN:1471-2148
1471-2148
DOI:10.1186/1471-2148-9-173