Dr Thangaraj's team traced the founder of the European Roma using the Y chromosome genetic signatures.
There is no archaeological evidence about the origin of the Roma, and even historical documentation is scanty.
The research therefore focused on genetics.
The conclusions have been arrived at after an exhaustive study involving screening of about 10,000 males around the world, including 7,000 hailing from 205 ethnic population of India to discern a more precise ancestral source of Romani population.
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