The Yeniseian and Andronovo Substrates in the Gene Pools of the Indigenous Southern Siberian Populations Analyzed by Q and R1a Y-Haplogroups Abstract Background/Objectives: Due to advances in paleogenetic research, a substantial amount of data has been accumulated on the Y-chromosome of the ancient Scytho-Siberian population that inhabited South Siberia and the adjacent territories of modern Mongolia and North-West China. It became possible to compare the Y-chromosomes of ancient men a