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.
Uyghur language
The historical term "Uyghur" was appropriated for the language that had been known as Eastern Turki by government officials in the Soviet Union in 1922 and in Xinjiang in 1934. Sergey Malov was behind the idea of renaming Turki to Uyghurs. The use of the term Uyghur has led to anachronisms when describing the history of the people. In one of his books the term Uyghur was deliberately not used by James Millward. The name Khāqāniyya was given to the Qarluks who inhabited Kāshghar and Bālāsāghūn, the inhabitants were not Uighur, but their language has been retroactively labelled as Uighur by scholars. The Qarakhanids called their own language the "Turk" or "Kashgar" language, and did not use Uighur to describe their own language, Uighur was used to describe the language of non-Muslims but Chinese scholars have anachronistically called a Qarakhanid work written by Kashgari as "Uighur". The name ""Altishahri-Jungharian Uyghur"" was used by the Soviet educated Uyghur Qadir Haji in 1927.