Steppe ancestry means descent from the Western Steppe Herders of the Pontic-Caspian grassland, the Yamnaya and their relatives, who spread across Europe and into Asia after 3000 BC. Almost every European genome has some of it and the amount varies with geography, which is why a steppe percentage is the most requested single number in ancestry analysis. It is a measured share of one ancient population; it is not a marker of identity.
The articles explain what a steppe percentage actually measures and how to estimate one from a raw DNA file with qpAdm or Global25, set out the 2023 hybrid hypothesis that dated the Indo-European root to about 8,120 years ago and its debated origin, and read Ukraine as the land the steppe expansions left from, with the Yamnaya homeland and the Trypillia mega-sites.
What the paid qpAdm analysis includes