Leonid A. Lavrenchenko

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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)
222 Natural hybridization zones between earlier diverged populations provide broad opportunities for studying the gene flow dynamics and the consequences of disturbance of coadapted genomes [1]. The use of chromosome analysis methods in taxonomic studies of common voles of the Microtus arvalis group led to distinguishing karyologically discrete sibling(More)
A large-scale study of short retroposon (SINE) B1 has been conducted in the genome of rodents from most of the known families of this mammalian order. The B1 nucleotide sequences of rodents from different families exhibited a number of characteristic features including substitutions, deletions, and tandem duplications. Comparing the distribution of these(More)
Empirical testing of the hypotheses for speciation, namely, allopatric (refugia model) and parapatric (gradient model) models, has been attempted using molecular phylogenetic methods by a case study on several groups of closely related species of small mammals inhabiting the Ethiopian Plateau. Comparison of the results with the available literature data on(More)
Molecular markers of cryptic cytogenetical differentiation were shown in chromosomal polymorphic Pan-European model group of rodents Microtus arvalis s. l. by FISH analysis. The polytypy of 46-chromosomes karyotypes determined by the sites of interstitial telomeric sequences (ITS) and ribosomal DNA emphasizes the genetical isolation of M. arvalis s. s. and(More)
Common voles of the Microtus arvalis group distributed over the territory of European Russia are represented by three karyotypic categories, i.e., sympatric sibling species with 2n = 46 and 54, and two allopatric karyoforms in one of them, 2n = 46. For each category, molecular markers were found. For two 46-chromosome forms (arvalis and obscurus), iDNA was(More)
57 Twenty-eight out of 30 species of the family Soricidae living in Ethiopia belong to the genus Crocidura. Eleven of them are endemic to this country; they are either forest (seven species) or mountain (four species) forms. All these endemic species of Crocidura have primitive characters of the cranial structure but exhibit a striking diversity of(More)
Rodents of the genus Mus represent one of the most valuable biological models for biomedical and evolutionary research. Out of the four currently recognized subgenera, Nannomys (African pygmy mice, including the smallest rodents in the world) comprises the only original African lineage. Species of this subgenus became important models for the study of sex(More)
Karyotypes of two species of genus Tachyoryctes from four localities in the Bale Mountains National Park, Ethiopia, were analyzed. T. splendens has 2n = 48, NFa = 65-86. Variations of the autosome arm number are determined by different numbers of autosomes with additional heterochromatin arms (7-17). Karyological analysis indicated that the cytogenetic(More)