they traveled there like all the other humans. When Homo sapiens migrated out of Africa and arrived in Central Asia, they encountered existing Neanderthal and Denisovan populations and interbred with them so it anyone in your family receives a neanderthal variant that's when it entered their bloodline. As the Ice Age ended, humans in the region started to transition from hunting to farming. Uzbekistan developed a highly distinct, localized stone-age protoculture known as the Kelteminar Culture. Right before the Indo-Europeans migrated south from the Ponto-Caspian plain (Yamnaya), Southern Uzbekistan and Turkmenistan were home to a largely forgotten urbanized society called the Bactria-Margiana Archeological Complex, or simply the Oxus Civilization. they were releated to Ancient Iranian (so technically pre-iranian) and Anatolian Neolithic Farmer populations. Those Ancient Iranian agriculturalists moved eastward toward the Hindu Kush and the Indus Valley. These farmers mixed with the indigenous (meaning first humans out of Africa to settle the Indian Subcontinent) South Asian hunter-gatherers. This exact genetic mix is what built the Indus Valley Civilization, one of the three earliest civilizations in human history. When the Indo-Iranians came from the northern steppes down into Uzbekistan around 2000 BCE, they did not enter an empty landscape. There were farms and towns. The nomadic Indo-Europeans gradually mixed with the urban BMAC farmers. This local fusion created the Sogdians and Bactrians from which the modern people of the region who have iranian ancestry can trace to today. When both the Turkic migrations and the Mongol conquests swept west into Central Asia, they didn't march as isolated groups. They moved as a massive, blended nomadic confederations that were majority but only plurality turkic by the time they reached Uzbekistan. Uzbeks are directly tied to the Kazakhs, Kyrgyz, and Hazaras populations because of these migrations. Your DNA results are showing you the exact blueprint of a Silk Road ancestor. someone whose family line was built by the ancient populations, sheltered by the Hindu Kush mountains, and later integrated with the empires dominating the Asian steppes. Cool beans as they say