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.
History of Turkmenistan
The origins of the Turkmen may be traced back to the Oghuz confederation of nomadic pastoral tribes of the early Middle Ages, which lived in present-day Mongolia and around Lake Baikal in present-day southern Siberia. Known as the Nine Oghuz, this confederation was composed of Turkic-speaking peoples who formed the basis of powerful steppe empires in Inner Asia. In the second half of the 8th century, components of the Nine Oghuz migrated through Jungaria into Central Asia, and Arabic sources located them under the term Guzz in the area of the middle and lower Syrdariya in the 8th century. By the 10th century, the Oghuz had expanded west and north of the Aral Sea and into the steppe of present-day Kazakhstan, absorbing not only Iranians but also Turks from the Kipchak and Karluk ethnolinguistic groups. In the 11th century, the renowned Muslim Turk scholar Mahmud al-Kashgari described the language of the Oghuz and Turkmen as distinct from that of other Turks and identified twenty-two Oghuz clans or sub-tribes, some of which appear in later Turkmen genealogies and legends as the core of the early Turkmen.