sentences:  Anthony cites evidence from ancient DNA, that the Bronze Age Maykop people of the Caucasus (previously proposed as a possible southern source of language and genetics at the root of Indo-European), had little genetic impact on the Yamnaya (whose paternal lineages differ from those found in Maykop remains, but are instead related to those of pre-Yamnaya Eastern European steppe hunter-gatherers).In addition, the Maykop (and other contemporary Caucasus samples), along with CHG, had significant Anatolian Farmer ancestry "which had spread into the Caucasus from the west after about 5000 BC", but is little detected in the Yamnaya.Partly for these reasons, Anthony concludes that Bronze Age Caucasus groups such as the Maykop "played only a minor role, if any, in the formation of Yamnaya ancestry."