Population differentiation of southern Indian male lineages correlates with agricultural expansions predating the caste system. oleh Ganeshprasad Arunkumar, David F Soria-Hernanz, Valampuri John Kavitha, Varatharajan Santhakumari Arun, Adhikarla Syama, Kumaran Samy Ashokan, Kavandanpatti Thangaraj Gandhirajan, Koothapuli Vijayakumar, Muthuswamy Narayanan, Mariakuttikan Jayalakshmi, Janet S Ziegle, Ajay K Royyuru, Laxmi Parida, R Spencer Wells, Colin Renfrew, Theodore G Schurr, Chris Tyler Smith, Daniel E Platt, Ramasamy Pitchappan, Genographic Consortium