title: Human chromosomal polymorphism. II. Chromsomal C polymorphism in Mongoloid populations of Central Asia.
abstract: C polymorphism of chromosomes 1, 9 and 16 was studied in 447 Mongoloids of Central Asia living under different ecological conditions; two highland (Kirghiz) and three steppe (Kazakh, Mongolian, and Dungan) populations. C band sizes were estimated according to the semiquantitative 5-level method of Patil and Lubs (1977). All the ethnic groups studied showed statistically significant homogeneity in the frequency of C variants. It is suggested that chromosomal C-heterochromatin material has no selective value in the process of human adaptation to extreme high-altitude factors.
mesh_terms: D000293:Adolescent; D000531:Altitude; D044466:Asian People; D002871:Chromosome Banding; D002900:Chromosomes, Human, 1-3; D002902:Chromosomes, Human, 16-18; D002906:Chromosomes, Human, 6-12 and X; D005260:Female; D006570:Heterochromatin / Q000032:analysis*; D006801:Humans; D007623:Kazakhstan / Q000208:ethnology; D007707:Kyrgyzstan / Q000208:ethnology; D008297:Male; D011110:Polymorphism, Genetic
chemical_list: D006570:Heterochromatin