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The effect of Cu2+ on the structural organization of the cell surface of Escherichia coli bacteria during the induction of conductivity of a plasma membrane was studied. A fluorescent study did not reveal any substantial changes in the microviscosity of lipids by the action of copper ions. At the same time, a substantial reorganization of membrane proteins(More)
We analyzed our results and literature evidence on variability of nuclear protein genes in 39 populations of eight commensal and wild species of house mice (superspecies complexesMus musculus and M. spicilegus) from Transcaucasia, Eastern and Western Europe, Near and Middle East, Central, South, and East Asia, and Cuba. These data were for the first time(More)
458 Voles and lemmings (subfamily Arvicolinae) are one of the youngest and species rich groups of myo morphic rodents prevailing in different landscape zones of the northern hemisphere. Because of unprec edented fossil records, as well as rapid and continuing morphogenesis, they became leading forms in correla tion and biostratigraphy of late Cenozoic(More)
Phylogenetic analysis of the supraspecies relationships was carried out using partial sequences of two nuclear genes in the subfamily Arvicolinae, which is one of the youngest and species-rich groups of myomorph rodents. The analysis with the new data resolved the majority of polytomy nodes in the phylogenetic trees reported for Arvicolinae, suggesting a(More)
It is rather difficult to construct a system of gray voles of the tribe Microtini by a set of morphological and karyological characters because form generation is mosaic at these organization levels. The sequence of the mitochondrial cytochrome b gene was used to study the phylogenetic relationships and taxonomic position of the Central Asian subgenus(More)
Study of intraspecific genetic diversity is one of the major problems of contemporary molecular ecology and population genetics. It allows researchers to reveal cryptic taxons, differentiate phylogroups within a species (i.e., solve the problem beyond the capacities of paleontology), explore the history of their formation and also reticular evolution. The(More)
The range of the genus Talpa covers almost all Europe up to Western Asia. This genus has never been the object of comprehensive systematic studies using molecular and genetic techniques, such that the evolutionary relationships among species remain unclear. Talpa shows high levels of endemism, and the influence of past glaciation cycles on the distribution(More)
Phylogenetic analysis of supraspecies relationships in one of the most young and species rich group of myomorph rodents - subfamily Arvicolinae was carried out on the base of two nuclear genes. Results have shown that mole-voles - Ellobiusini, steppe voles - (Lagurini) and grey voles (Arvicolini) are sister groups. This divergence is the most late, third(More)
The evolutionary success of rodents of the superfamily Muroidea makes this taxon the most interesting for evolution studies, including study at the chromosomal level. Chromosome-specific painting probes from the Chinese hamster and the Syrian (golden) hamster were used to delimit homologous chromosomal segments among 15 hamster species from eight genera:(More)
A (w, r) cover-free family is a family of subsets of a finite set such that no intersection of w members of the family is covered by a union of r others. A binary (w, r) superimposed code is the incidence matrix of such a family. Such a family also arises in cryptography as a concept of key distribution patterns. In this paper, we develop a method of(More)