T. F. Mazurova

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The whole-mount SC preparations from males of three species of the genus Ellobius (Ellobius fuscocapillus, Ellobius lutescens), and Ellobius tancrei Ellobius tancrei has been distinguished as a separate superspecies recently (Vorontsov & Yakimenko, 1984); earlier it was systematically attributed to species Ellobius talpinus. were studied by electron(More)
Synaptonemal complexes (SC) in four Ellobius talpinus males heterozygous for ten Robertsonian translocations were examined with an electron microscope using a surface-spreading technique. A total of 136 late zygotene and pachytene spermatocytes were examined. From one to three completely paired SC trivalents were found in each early pachytene spermatocyte.(More)
The cytological expression of spontaneous mutation sy2 isolated from a population of weedy rye was examined. It was demonstrated that the primary defect of meiosis in the mutant plants is nonhomologous synapsis, which occurs simultaneously with the homologous one. An electron microscope study of the synaptonemal complex (SC) at prophase I showed synaptic(More)
Electron microscopic study of total preparations of synaptonemal complexes of spermatocytes I from sterile heterozygous male mice--t12/tw18; tw5/twPa-1; twPa-1/tw18 was performed. T/tw18 and C3H/N fertile heterozygotes were used in each variant as control. The cells are karyotyped in all experiments, as based on the measurements of the length of 19 SC(More)
The structure of synaptonemal complexes (SCs) of chromosomes of mouse primary spermatocytes were studied using electron microscopy on days 1, 10, and 36 after the completion of per os administration of drugs belonging to three groups of antibiotics: tetracyclins, macrolides, and fluoroquinolones. The antibiotics were administered to mice during ten days. At(More)
Four male mice were shown to have decreased fertility among 74 laboratory male mice exposed in the Chernobyl APP area during embryogenesis. Electron microscopic analysis of synaptonemal complexes (SC) of at zygotene-diplotene and light-optic analysis of chromosome aberrations at diakinesis-metaphase 1 demonstrated the presence of interchromosome(More)
A long-term (during 4 months) daily peroral injections of neoaquasept (NA) (a drinking water disinfections agent) at a dose corresponding to the normal level of consumption increases the number of spermatocytes in which the sexual bivalent associates with normal autosomal bivalents (up to 18.2%). In single cells a premature desynapsis of sex chromosomes at(More)
A new pseudo-random number generator algorithm RC4E, having period significantly greater than RC4 has, is proposed. It is an extension of RC4. It uses RC4 as a main engine and Heap's algorithm as a second engine, providing enumeration of all possible permutations. Second engine is invoked periodically and it resets the current state of the main engine.(More)
The structure of synaptonemal complexes (SCs) of chromosomes of mouse primary spermatocytes were studied using electron microscopy on days 1, 10, and 36 after the completion of per os administration of drugs belonging to three groups of antibiotics: tetracyclins, macrolides, and fluoroquinolones. The antibiotics were administered to mice during ten days. At(More)
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