...Lyubov P. Malinovskaya; Anastasia Y. Slobodchikova; Ekaterina O. Grishko; Inna E. Pristyazhnyuk; Anna A. Torgasheva; Pavel M. Borodin Karyotypes of less than 10% of bird species are known. Using immunolocalization of the synaptonemal complex, the core structure of meiotic chromosomes...

.... Synaptic adjustment Synaptonemal complex Insertion Inversion MLH1 Original Article Cytogenet Genome Res 2021;161:14 22 DOI: 10.1159/000513266 Received: April 2, 2020 Accepted: September 16, 2020 Published online: March 16, 2021 Homogeneously Staining Regions (HSR) in Chromosome 1 of the House Mouse...

...]. The synaptonemal complex (SC) is formed between homologous chromosomes and is composed of a variety of proteins including synaptonemal complex protein 1 (SYCP1) in the central region and synaptonemal complex protein 3 (SYCP3) in the lateral elements [Börner et al., 2004; Kleckner, 2006; Qiao et al., 2012; Baudat...

...Nicolas Mary; Stéphane Ferchaud; Harmonie Barasc; Anne Calgaro; Nathalie Bonnet; Alain Ducos; Alain Pinton Meiotic recombination parameters like crossover (CO) rate or synaptonemal complex (SC) length are known to vary strongly between individuals and between cells from the same individual...

... or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Cats Meiosis Protein markers Synaptonemal complex XY body During the first...

... of biodiversity, we analysed the frequency and distribution of meiotic recombination in 2 reticulated giraffe males. We used immunofluorescence detection of synaptonemal complex protein (SYCP3), meiotic double strand breaks (DSB, marked as RAD51 foci) in leptonema, and crossovers (COs, as MLH1 foci) in pachynema...

... other, revealing minor heteromorphisms. Using electron and fluorescent microscopy of surface spread synaptonemal complexes (SCs) and immunolocalization of the proteins of the SC (SYCP3), the centromere, and recombination nodules (MLH1), we examined sex chromosome synapsis and recombination in 2 species...

..., instructions or products referred to in the content or advertisements. SYCP3 Synaptonemal complex Avian chromosomes Crossover distribution Crossover interference Meiosis MLH1 Meiotic recombination (crossing over) plays an important role in evolution. It secures orderly chromosome...

...Adriana Geisinger; Ricardo Benavente Human infertility is often classified as idiopathic in both males and females. Meiotic errors may account for at least part of these cases. As the synaptonemal complex (SC, a meiosis-specific protein scaffold) is essential for successful meiosis progression...

...-out animals are not available to fully investigate the basic mechanisms of major meiotic events. This review highlights the main contributions of synaptonemal complex and lampbrush chromosome research to the current knowledge of avian meiosis, with special emphasis on the organization of chromosomes...

... significant differences in both recombination rates and the total length of autosomal synaptonemal complexes (SC) between cattle (47.53 MLH1 foci/cell, 244.59 µm) and members of the tribe Caprini (61.83 MLH1 foci, 296.19 µm) which can be explained by the length of time that has passed since their evolutionary...

...Johanna Fraune; Manfred Alsheimer; Josef Redolfi; Céline Brochier-Armanet; Ricardo Benavente During the first meiotic prophase, chromosome synapsis is mediated by the synaptonemal complex (SC), an evolutionarily conserved meiosis-specific structure. In mammals, 7 SC protein components have been...

... fertile stallions, and the average relative synaptonemal complex length was found to be highly correlated with the average number of MLH1 foci. The frequency and distribution of MLH1 foci were found to closely correspond to the frequency and distribution of chiasmata on metaphase I chromosomes...

.... Angiosperms Chromosome segregation Meiosis Polyploidy Recombination Synaptonemal complex The significance of meiosis for inheritance and evolution was first recognized more than a century ago [Weismann, 1893]. Since that time, considerable progress has been made in deciphering the cytological...

... of the genus Connochaetes (47.2 vs. 43.7, p < 0.001). The number of MLH1 foci was significantly correlated with the length of the autosomal synaptonemal complexes. The average interfocus distance was influenced by interference. The male recombination maps of bovine chromosomes 2 and 25 and of their fused...

... was 2n = 8 II +Xy p . The C-banding showed blocks of pericentromeric heterochromatin in all chromosomes except in the y p chromosome. In these regions, the use of fluorochromes revealed the presence of heterochromatin containing GC rich DNA sequences. The study of synaptonemal complex showed a gradual...

...L. del Priore; M.I. Pigozzi The assembly and disassembly of the synaptonemal complexes (SCs) correlate with the progression of meiotic prophase I. Using immunostaining of the cohesin component SMC3, which is present in the axial elements of the SC, we characterized the synaptic process in chicken...

... to be the result of an inversion. To verify this hypothesis, we analysed chromosome synapsis in prophase I of meiosis. We utilised a synaptonemal complex (SC) surface-spreading technique to visualise the process of chromosome synapsis in the spermatocytes and oocytes of first-generation hybrids and back-crosses...

... lineage (subgenus Alexandromys ). Using immunostaining for the proteins of the synaptonemal complex (SCP3) and recombination nodules (MLH1) we demonstrated that X and Y chromosomes of these species paired and recombined in a short subtelomeric region. This indicates that the sex chromosomes...

... using high-resolution, electron microscopic examination of pachytene chromosome (= synaptonemal complex) spreads to determine whether any minor structural changes had occurred among species in the tomato clade, which were not easily visible using light microscopic analysis of conventional chromosome...