Genetic study of Dravidian castes of Tamil Nadu

The origin and settlement of Indian people still intrigues sci-entists studying the impact of past and modern migrationson the genetic diversity and structure of contemporary pop-ulations. About 10,000 years ago, proto-Dravidian Neolithicfarmers from Afghanistan entered the Indian subcontinent,and were later displaced southwards by a large influx ofIndo–European speakers ∼3500 years ago (Majumder