V A Beniush

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During the final 5.5th to 7th hr of the cycle in presence of BUdR, the human Y-chromosome was delayed in its mitotic condensation in the distal part of the long arm. This part was not homogeneous by the degree of the delay. The unevenly condensed Y-chromosome stained with quinacrine was brightly fluorescent in its stretched part. The fluorescence seemed to(More)
Activity of nucleolar organizer regions (NORs) was studied in cultured blood lymphocytes of 8 monozygotic and 8 dizygotic twin pairs using Ag-staining of acrocentric chromosomes. These chromosomes were identified by G-banding. NOR activity was estimated by the number of Ag-stained regions, their distribution among individuals acrocentrics and the size of(More)
The chromosome preparations of 12 normal individuals were consequently stained with four different techniques (RV, Q, C and Ag). Correlations between morphological and staining peculiarities of specific polymorphic segments of the short arms of the same acrocentrics were investigated. It was determined that except correlations for the length of satellite(More)
Metaphase chromosomes of the Chinese hamster differentially-condensed under the influence of a) 5-bromdeoxyuridine, b) colcemide, and c) cold, were stained with acridine-orange (AO) in concentrations of 1.5 X 10(-7) to 3 X 10(-5) g/ml at pH 4.1 to 8.5. It was found that stretched chromosomal segments fluoresced in the orange/red part of the spectrum,(More)
The population study of nucleus organizing regions (NOR) activity in individuals of Georgian nationality was carried out using the Ag-method. The results obtained were compared with those for other populations: Russian, Viena-Ulm, Estonian etc. The mean number of active NORs for Georgians is 9.0, which significantly exceeds analogous indexes for the rest of(More)
Differences in the morphology of the human iso-X-chromosome differentially condensed by the treatment with 5-bromodeoxyuridine were revealed by means of quantitative morphometry. It is shown that these differences are not random and are correlated with the asynchrony of the reduplication of iso-arms. It is assumed that the differences in the structural(More)