title: [Polymorphism of near-centromeric heterochromatin in a population of normal humans].
abstract: Polymorphism of constitutive heterochromatin of metaphase chromosomes 1,9 and 16 in 6 normal humans (both men and women) in studied by means of C-staining. Only slight variability in size of C-blocks in one individium (from cell to cell) and a high frequency of C-chromation heteromorphism variants within the population studied is observed. 8 variants of C-heterochromatin (heteromorphic homologues) are found: 4 individuals had 1-2 variants and 1 individual - 3 variants. Quantitative analysis based on measurements of C-blocks confirmed the reliability of the existence of these variants.
mesh_terms: D002900:Chromosomes, Human, 1-3; D002902:Chromosomes, Human, 16-18; D002906:Chromosomes, Human, 6-12 and X; D005260:Female; D006570:Heterochromatin / Q000648:ultrastructure*; D006801:Humans; D008297:Male; D011110:Polymorphism, Genetic
chemical_list: D006570:Heterochromatin
vernacular_title: K voprosu o polimorfizme okolotsentromernogo heterokhromatina vpopuliatsii normal'nykh liudeĭ