Although genetic testing demonstrates primarily the Turkification of the region rather than the fact that the Azerbaijani Turks are descendants of migrants from Central Asia, it does, however, show that the region is a genetically mixed one. Although the population of Azerbaijan is culturally diverse, genetic testing has revealed common genetic markers that support an autochthonous background for most Azerbaijani Turks. There is evidence of genetic admixture derived from Central Asians (specifically Haplogroup H12), notably the Turkmen, that is higher than that of their neighbors, the Georgians and Armenians. MtDNA analysis indicates that the main relationship with Iranians is through a larger West Eurasian group that is secondary to that of the Caucasus, according to a study that did not include Azerbaijani Turks, but Georgians who have clustered with Azerbaijani Turks in other studies. The conclusion from the testing shows that the Azerbaijani Turks of the republic are a mixed population with relationships, in order of greatest similarity, with the Caucasus, Iranians and Near Easterners, Europeans, and Turkmen. Other genetic analysis of mtDNA and Y-chromosomes indicates that Caucasian populations are genetically intermediate between Europeans and Near Easterners, but that they are more closely related to Near Easterners overall. Another study, conducted in 2003 by the "Russian Journal of Genetics", compared Iranian-language speakers of the Republic of Azerbaijan (the Talysh and Tats) with Turkic Azerbaijanis and found that the genetic structure of those populations, compared with the other Iranian-speaking populations (Persians from Iran, Ossetins, and Tajiks), was closer to Turkic Azerbaijanis than to Iranian-speaking populations elsewhere.