books.google.com - Many historical events such as invasions, wars, civil unrests, migrations, and religious conversions have shaped the genetic heritage of India. These events created a potpourri of cultures and genes. The invaders came from Central Asia, Afghanistan, Arabia, Iran, Greece, Britain, France, and Portugal...http://books.google.com/books/about/Invasion_of_the_Genes.html?id=Vp_q_MjupOIC&utm_source=gb-gplus-shareInvasion of the Genes
