[Quantitative assessment of human chromosomal polymorphism with regard to paracentromeric heterochromatin].
The measurement of C-segment length in chromosomes 1, 9 and 16 of 7 individuals was carried out. The regression analysis was employed to study a change of the C-segment sizes in the process of mitotic chromosome condensation. Typical values of C-segment length for chromosomes 1, 9 and 16 are about 1.4, 1.1 and 0.8mu respectively. Among 7 individuals there was no two which had identical size of C-segments for all three chromosomes studied. In six individuals heteromorphysm of C-segments was revealed. It was found that visually detected heteromorphysm may be expressed quantitatively as ratio length of C-segments in homologous chromosomes.
D002478:Cells, Cultured; D002877:Chromosomes, Human; D002900:Chromosomes, Human, 1-3; D002902:Chromosomes, Human, 16-18; D002906:Chromosomes, Human, 6-12 and X; D006570:Heterochromatin; D006801:Humans; D008214:Lymphocytes / Q000648:ultrastructure; D011110:Polymorphism, Genetic
D006570:Heterochromatin
Kolichestvennaia otsenka khromosomnogo polimorfizma cheloveka po okolotsentromernomu geterokhromatinu.