A5064451260- Chromosomal and Genetic Variations
- Genetic diversity and population structure
- Plant Reproductive Biology
- Sperm and Testicular Function
- Genomics and Phylogenetic Studies
- Animal Genetics and Reproduction
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Genetic Mapping and Diversity in Plants and Animals
- DNA and Nucleic Acid Chemistry
Institute of Cytology and Genetics
2021-2023
Novosibirsk State University
2021-2022
Siberian Branch of the Russian Academy of Sciences
2021
We analyzed the synapsis and recombination between Z W chromosomes in oocytes of nine neognath species: domestic chicken Gallus gallus domesticus, grey goose Anser anser, black tern Chlidonias niger, common Sterna hirundo, pale martin Riparia diluta, barn swallow Hirundo rustica, European pied flycatcher Ficedula hypoleuca, great tit Parus major white wagtail Motacilla alba using immunolocalization SYCP3, main protein lateral elements synaptonemal complex, MLH1, mismatch repair marking...
Karyotypes of less than 10% bird species are known. Using immunolocalization the synaptonemal complex, core structure meiotic chromosomes at pachytene stage, and centromere proteins, we describe male karyotypes 17 birds. This method enables higher resolution conventional analyses metaphase chromosomes. We provide first descriptions 3 (rook, Blyth's reed warbler, European pied flycatcher), correct published data on 10 species, confirm them for 4 species. All passerine examined have highly...
Meiotic recombination is an important source of genetic diversity. Using immunolocalization several meiotic proteins at the spreads male pachytene cells, we estimated number nodules per cell and their distribution along macrochromosome 1 Common linnet, Eurasian bullfinch, siskin, European goldfinch. The macrochromosomes two former species have metapolycentromeres, composed centromeric domains. We detected significant interspecies differences in mean numbers genome: 52.9 ± 2.8 49.5 3.5 61.5...
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...
Abstract Karyotypes of less than 10% bird species are known. Using immunolocalization the synaptonemal complex, core structure meiotic chromosomes at pachytene stage, and centromere proteins we described male karyotypes seventeen birds. This method enables higher resolution conventional analyses metaphase chromosomes. We provided first descriptions three (Rook, Blyth’s reed warbler European pied flycatcher), corrected published data on ten confirmed them for four species. All passerine...