Iranian Azerbaijanis
According to HLA testing, Azerbaijanis of Iran cluster together with the Turkmens of Gorgan and Kurds and constitute an intermediate position between Iranian populations and Western Siberians, specifically Chuvash, Mansi people, and Buryats (subgroups of Turkic peoples, Ugrians, and Mongols respectively). Several genetic studies show that the Azerbaijanis' gene pool largely overlap with that of the native populations in support of language replacement, including elite dominance, scenarios, while also demonstrating significant genetic influence from Siberia and Mongolia. No close genetic relationship was observed between Azerbaijanis of Iran and the people of Turkey or Central Asians. A study conducted on Azerbaijanis of Tabriz in 2022 also concluded that the genetic origins and Turkic language of the Azerbaijanis are do not correlate.