A5056650583- Chromosomal and Genetic Variations
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Genetic diversity and population structure
- Animal Behavior and Reproduction
- Genetic Mapping and Diversity in Plants and Animals
- Genomics and Phylogenetic Studies
- Amphibian and Reptile Biology
- Plant and animal studies
- Animal Genetics and Reproduction
- DNA and Nucleic Acid Chemistry
- Hemiptera Insect Studies
- Paleontology and Evolutionary Biology
- Insect and Arachnid Ecology and Behavior
- Advanced biosensing and bioanalysis techniques
- Insect and Pesticide Research
- Sperm and Testicular Function
- Evolution and Genetic Dynamics
- Plant Reproductive Biology
Siberian Branch of the Russian Academy of Sciences
2019-2024
Russian Academy of Sciences
2020-2023
Novosibirsk State University
2018-2022
Institute of Cytology and Genetics
2018-2020
Introduction: The Phasianidae family belongs to Galliformes, which is basal other Neognathae. Despite the availability of chromosome-level genome assemblies for many species, karyotypes some species remain poorly investigated. Methods: In this study, we described using classical, differential, and molecular cytogenetic (BAC-FISH) methods. To compare genomes 10 Galliformes dot-plot analysis was performed. Results: We provide first comprehensive description karyotype two Tetraonini species:...
Hybrid sterility is an important step in the speciation process. Hybrids between dwarf hamsters Phodopus sungorus and P. campbelli provide a good model for studies cytological genetic mechanisms of hybrid sterility. Previous hybrids detected multiple abnormalities spermatogenesis high frequency dissociation X Y chromosomes at meiotic prophase. In this study, we found that autosomes males females underwent paring recombination as normally their parental forms did. The male showed...
Whole-chromosome fusions play a major role in the karyotypic evolution of reptiles. It has been suggested that certain chromosomes tend to fuse with sex more frequently than others. However, comparative genomic synteny data are too scarce draw strong conclusions. We obtained and sequenced chromosome-specific DNA pools Sceloporus malachiticus , an iguanian species which experienced many chromosome fusions. found four seven lineage-specific involved chromosomes, syntenic blocks constitute such...
Heterochiasmy, a sex-based difference in recombination rate, has been detected many species of animals and plants. Several hypotheses about evolutionary causes heterochiasmy were proposed. However, there is shortage empirical data. In this paper, we compared related traits females males the barn swallow Hirundo rustica (Linnaeus, 1758), under strong sexual selection, with those pale martin Riparia diluta (Sharpe Wyatt, 1893), ecologically similar same karyotype (2N = 78), but without obvious...
Meiotic recombination rates and patterns of crossover distributions along the chromosomes vary considerably even between closely related species. The adaptive significance these differences is still unclear due to paucity empirical data. Most data on come from mammalian species, while other vertebrate clades are poorly explored. Using immunolocalization protein lateral element synaptonemal complex (SYCP3) mismatch-repair MLH1, which marks mature nodules, we analyzed distribution in meiotic...
Abstract The classical hypothesis proposes that the lack of recombination on sex chromosomes arises due to selection for linkage between a sex-determining locus and sexually antagonistic loci, primarily facilitated by inversions. However, cessation could be attributed also neutral processes, connected with other chromosome rearrangements or can reflect sex-specific patterns existing already before differentiation. Three Coleonyx gecko species share complex X 1 2 /X Y system evolved via...
Abstract. The efficiency of natural and artificial selection is critically dependent on the recombination rate. However, interbreed individual variation in rate poultry remains unknown. Conventional methods analysis such as genetic linkage analysis, sperm genotyping chiasma count at lampbrush chromosomes are expensive time-consuming. In this study, we analyzed number distribution nodules spermatocytes roosters six chicken breeds using immunolocalization key proteins involved chromosome...
Galliformes and Anseriformes are two branches of the Galloanserae group, basal to other Neognathae. In contrast Galliformes, have not been thoroughly researched by cytogenetic methods. This report is focused on representatives evolution their chromosome sets. Detailed analysis (G-banding, C- banding, fluorescence in situ hybridization) was performed three duck species: northern pintail (Anas acuta, 2n = 80), mallard (A. platyrhynchos, common goldeneye (Bucephala clangula, 80). Using stone...
Abstract There is a growing body of evidence that the common ancestor vertebrates had bimodal karyotype, i.e. consisting large macrochromosomes and small microchromosomes. This type karyotype organization preserved in most reptiles. However, certain species independently experience microchromosome fusions. The evolutionary forces behind this are unclear. We investigated green spiny lizard, Sceloporus malachiticus, an iguana which has 2n=22, whereas ancestral iguanas 2n=36. obtained sequenced...
Benefits and costs of meiotic recombination are a matter discussion. Because breaks allele combinations already tested by natural selection generates new ones unpredictable fitness, high rate is generally beneficial for the populations living in fluctuating or rapidly changing environment costly stable environment. Besides genetic benefits costs, there cytological effects recombination, both positive negative. Recombination necessary chromosome synapsis segregation. However, it involves...
The veiled chameleon (Chamaeleo calyptratus) is a typical member of the family Chamaeleonidae and promising object for comparative cytogenetics genomics. karyotype C. calyptratus differs from putative ancestral (2n = 36) due to smaller chromosome number 24) resulting multiple fusions. homomorphic sex chromosomes an XX/XY system were described recently using male-specific RADseq markers. However, chromosomal pair carrying these markers was not identified. Here we obtained chromosome-specific...
Abstract The classical hypothesis proposes that the lack of recombination on sex chromosomes arises due to selection for linkage between a sex-determining locus and sexually antagonistic loci, primarily facilitated by inversions. However, cessation could be attributed also neutral processes, connected with other chromosome rearrangements or can reflect sex-specific patterns existing already before differentiation. Three Coleonyx gecko species share complex X 1 2 /X Y system evolved via...
Representatives of Infraorder Gekkota demonstrate relatively low chromosomal evolution and rapidly evolved sex chromosome systems. Using low-coverage sequencing, we sequenced chromosome-specific libraries Gekko japonicus putative ofHemidactylus platyurus to compare with annotated genomes squamate reptiles.We found evolutionary long conservation macro-chromosome high dynamic micro-chromosomes.Also, discovered homologues synteny blocks between chromosomes species from different infraorder.