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For example, a broad survey of Y-chromosome variation among populations of central Eurasia found haplogroup O-M175*(xO1a-M119,O2a-M95,O3-M122) in 2.5% (one out of 40 individuals) of a sample of Tajiks in Samarkand, 4.5% (1/22) of Crimean Tatars in Uzbekistan, 1.5% (1/68) of Uzbeks in Surkhandarya, 1.4% (1/70) of Uzbeks in Khorezm, 6.3% (1/16) of Tajiks in Dushanbe, 1.9% (1/54) of Kazakhs in Kazakhstan, 4.9% (2/41) of Uyghurs in Kazakhstan, and 31.1% (14/45) of Koreans.[1] However, nearly all of these Korean O*(xO1a,O2a,O3) Y-chromosomes probably belong to Haplogroup O2b, which has been found in approximately 30% of many samples of Koreans.