Uyghurs
Contemporary scholars consider modern Uyghurs to be the descendants of a number of people, including the ancient Uyghurs of Mongolia who arrived at the Tarim Basin after the fall of the Uyghur Khaganate, Iranic Saka tribes, and other Indo-European peoples who inhabited the Tarim Basin before the arrival of the Turkic Uyghurs. DNA analyses indicate that the peoples of central Asia such as the Uyghurs are all mixed Caucasian and East Asian. Uyghur activists identify with the Tarim mummies, remains of an ancient people who inhabited the region, but research into the genetics of ancient Tarim mummies and their links with modern Uyghurs remains problematic, both to Chinese government officials concerned with ethnic separatism, and to Uyghur activists concerned that the research could affect their people's claim of being indigenous to the region.
Uyghurs
The Karakhanids converted to Islam in the tenth century beginning with Sultan Satuq Bughra Khan, the first Turkic dynasty to do so. Modern Uyghurs see the Muslim Karakhanids as an important part of their history, however, Islamization of the people of the Tarim Basin was a gradual process. The Indo-European Saka Buddhist Kingdom of Khotan was conquered by the Turkic Muslim Karakhanids from Kashgar in the early 11th century, but Uyghur Qocho remained mainly Buddhist until the 15th century, and the conversion of the Uyghur people to Islam was not completed until the 17th century.