...Tatiana Bikchurina; Ekaterina Grishko; Daria Odnoprienko; Pavel Borodin Introduction: Meiotic recombination is one of the major sources of genetic diversity. Understanding the cytogenetic basis for recombination rate alterations is essential to explain the patterns of variation observed between...

... of a small localized non-recombining region, characterized by a transposable element (TE) “hotspot,” low gene density, and low GC content. Methods: Sex-linked markers were mapped onto the W chromosome (scaffold 1). TEs in the WW genome were identified using RepeatModeler and RepeatMasker. Statistical...

...Kimberly M. Davenport; Stephanie McKay; Alan G. Fahey; Clare Gill; Brenda M. Murdoch Meiotic recombination is an important contributor to genetic variation and ensures proper chromosome segregation during gametogenesis. Previous studies suggest that at least 1 crossover (CO) per chromosome arm...

... PPP1R12BP1 and RBMY2DP . The idic(Y) was likely to have been formed through aberrant recombination between P1 palindromes and subsequently underwent mosaic loss. The patient's phenotype was attributable to deletion of some Y chromosomal genes and/or mosaic loss of chromosome Y (mLOY). The results suggest...

... 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...

...Terje Raudsepp; Bhanu P. Chowdhary The pseudoautosomal region (PAR) is a unique segment of sequence homology between differentiated sex chromosomes where recombination occurs during meiosis. Molecular and functional properties of the PAR are distinctive from the autosomes and the remaining regions...

...Laia Capilla; Montserrat Garcia Caldés; Aurora Ruiz-Herrera Meiotic recombination is a process that increases genetic diversity and is fundamental for sexual reproduction. Determining by which mechanisms genetic variation is generated and maintained across different phylogenetic groups provides...

... responsible for the formation of new allele combinations by the process of recombination. The first meiotic division is crucial to achieve both outcomes. During prophase I, homologous chromosomes find each other and undergo pairing, synapsis and recombination between non-sister chromatids. Suppression...

...Jan Fröhlich; Miluse Vozdova; Svatava Kubickova; Halina Cernohorska; Hana Sebestova; Jiri Rubes Despite similar genome sizes, a great variability in recombination rates is observed in mammals. We used antibodies against SYCP3, MLH1 and centromeres to compare crossover frequency, position along...

... support an XY system in B. balearicus , B. viridis and B. variabilis . While females show recombination, it is strongly suppressed (or not detectable) in males. Markers corroborate the largest chromosome pair 1 (homologous to linkage group 1 of Xenopus tropicalis ) to represent the sex chromosomes...

... to achieve in polyploid species which have more than 2 sets of chromosomes able to recombine. In this review, we describe how meiosis and meiotic recombination ‘deviate' in polyploid plants compared to diploids, and give an overview of current knowledge on how they are regulated. See also the sister article...

...M. Vozdova; H. Sebestova; S. Kubickova; H. Cernohorska; J. Vahala; J. Rubes The karyotypic evolution in the family Bovidae is based on centric fusions of ancestral acrocentric chromosomes. Here, the frequency and distribution of meiotic recombination was analyzed in pachytene spermatocytes from Bos...

... or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. 2012 Biomedical model Breeding strategies Chicken Epistasis Fine-mapping FISH Inversion <italic>LMBR1</italic> Preaxial polydactyly SNP ZRS Recombination Silkie...

... including profiling of telomeric DNA (array sizing and total content), telomerase activity, and expression of genes involved in the telomerase, recombination, and ALT pathways. In addition, an immunofluorescence analysis for an ALT marker, i.e. ALT-associated promyelocytic leukemia bodies (APBs...

... phylogenetic lineage of this genus, while normal X-Y synapsis has been observed in the species of subgenus Pallasiinus belonging to the Asian phylogenetic lineage. We analyzed sex chromosome pairing and recombination in M. maximowiczii, M. mujanensis and M. fortis which also belong to the Asian phylogenetic...

... protocol for immunolabelling meiotic proteins that allows the detection of a large range of proteins on strongly spread chromosomes throughout the entire meiotic process. We used this method to immunodetect MLH1, a crucial component of the meiotic recombination machinery, and found that it can...

...D. Phillips; C. Nibau; L. Ramsay; R. Waugh; G. Jenkins Distal localisation of chiasmata is common to many cereals and grasses, which consigns many genes of the complement to recombination backwaters. Releasing this potential untapped genetic variation for use in advanced breeding programmes...

..., formation of double strand breaks (DSBs) and recombination initiation. Our results demonstrate that in every case recombination initiation precedes synapsis, and that there is a direct relationship between the absence of meiotic recombination and the existence of particular unsynapsed chromosomal regions...