Original sentence: However, a more recent 2006 genetic study by India's National Institute of Biologicals results were that Indians have acquired very few genes from Indo-european (Indo-Iranian) language speakers, thus challenging the old version of Aryan migration theory, or showing that the Aryan people who migrated were not related to Europeans, and claimed through a reverse migration theory, transmitted their culture to Europeans through later trade routes and migration into Europe.Much of these theories were simply conjecture fueled by European imperialism  (see white man's burden).The researchers believe their results support the theory that Indo-european language speaking people who migrated into India may have merged with or imposed their social structure on the native northern Indians and placed themselves into the highest castes.This styling of an "Aryan invasion" by British colonial fantasies of racial supremacy  lies at the origin of the fact that all discussion of historical Indo-Aryan migrations or Aryan and Dravidian "races" remains highly controversial in India to this day, and does continue to affect political and religious debate
Edited sentence: However, a more recent 2006 genetic study by India's National Institute of Biologicals showed that Indians have acquired very few genes from Europeans, thus disproving the old version of Aryan migration theory, or showing that the Aryan people who migrated were not related to Europeans, and only transmitted their culture to Europeans through later trade routes and migration into Europe.Much of these theories were simply conjecture fueled by European imperialism (see white man's burden).The researchers believe their results support the theory that Europeans who migrated into India may have merged with or imposed their social structure on the native northern Indians and placed themselves into the highest castes.This styling of an "Aryan invasion" by British colonial fantasies of racial supremacy lies at the origin of the fact that all discussion of historical Indo-Aryan migrations or Aryan and Dravidian "races" remains highly controversial in India to this day, and does continue to affect political and religious debate