[Characteristics of the morphology and mitotic condensation of human Y chromosomes with structural rearrangements].
Parameters of the length and mitotic condensation were investigated in the following cases of Y-chromosome aberrations: isodicentric Y(q), Y-chromosome without heterochromatic block, and Y-chromosome with satellites. In the Ydic we revealed some differences between f-block, that is located near the inactive kinetochore, and the block near the active centromere. Satellites exert no influence on the mitotic function of Y chromosome, presumably owing to the presence of C-heterochromatic material. With the absence of heterochromatic region, a decline in condensation of the non-fluorescent segment was observed in addition to a simultaneous increase in its length. The mechanism of functioning of the structural heterochromatin is discussed.
D000328:Adult; D002648:Child; D002871:Chromosome Banding; D002872:Chromosome Deletion; D012734:Disorders of Sex Development / Q000473:pathology*; D005260:Female; D006059:Gonadal Dysgenesis / Q000473:pathology*; D006801:Humans; D008297:Male; D008938:Mitosis; D012729:Sex Chromosome Aberrations / Q000473:pathology; D014178:Translocation, Genetic; D014998:Y Chromosome / Q000473:pathology*
Osobennosti morfologii i mitoticheskoĭ kondensatsii Y-khromosom cheloveka so strukturnymi perestroĭkami.