Research by Oxford University and collaborators has shed new light on the last 100,000 years of human migration from Africa into Asia. The new genetic study confirms that some of the earliest migrants travelled into Asia by a southern route, possibly along the coasts of what are now Pakistan and India. The researchers identified a genetic marker in museum samples of inaccessible populations from the Andaman Islands in the Bay of Bengal. This allowed them to re-interpret previous genetic studies from the Indian sub-continent.
A group of Jarawas who live in isolation on the Andaman Islands Credit: Andaman Association
Professor Alan Cooper, Director of the Henry Wellcome Ancient Biomolecules Centre at Oxford University, who led the study, said: The findings mark a significant step forward in our understanding of the nature and timing of human settlement of the world outside Africa, and may even give us a glimpse of what these ancient explorers looked like genetically.
The Andaman Islanders have been an enigma since the early days of Victorian anthropology due to their distinctive physical appearance. They have a very short stature, dark pigmentation and tight curly hair which contrasts with settled populations practising agriculture in the region. The same features link them to other isolated populations throughout Southern Asia, many of whom are hunter-gatherers. This has lead to speculation that these groups might represent the original inhabitants of the region who have either been replaced or absorbed into more recent population expansions. More fancifully, some people have speculated that they are related to African Pygmy populations.
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