Results 21 to 30 of about 1,025,592 (331)
New Phytologist, 2020 Meiotic chromosome pairing between homoeologous chromosomes was reported in many nascent allopolyploids. Homoeologous pairing is gradually eliminated and replaced by exclusive homologous pairing in well-established allopolyploids, an evolutionary process
G. T. Braz +5 more
semanticscholar +1 more source
Dynamics of rye chromosome 1R regions with high or low crossover frequency in homology search and synapsis development. [PDF]
PLoS ONE, 2012 In many organisms, homologous pairing and synapsis depend on the meiotic recombination machinery that repairs double-strand DNA breaks (DSBs) produced at the onset of meiosis.
Nohelia T Valenzuela +2 more
doaj +1 more source
Chromosome painting reveals asynaptic full alignment of homologs and HIM-8-dependent remodeling of X chromosome territories during Caenorhabditis elegans meiosis. [PDF]
PLoS Genetics, 2011 During early meiotic prophase, a nucleus-wide reorganization leads to sorting of chromosomes into homologous pairs and to establishing associations between homologous chromosomes along their entire lengths.
Kentaro Nabeshima +2 more
doaj +1 more source
Natural Chromosome-Chromid Fusion across rRNA Operons in a Burkholderiaceae Bacterium
Microbiology Spectrum, 2022 Chromids (secondary chromosomes) in bacterial genomes that are present in addition to the main chromosome appear to be evolutionarily conserved in some specific bacterial groups.
Jiro F. Mori, Robert A. Kanaly
doaj +1 more source
The Novel Gene HOMOLOGOUS PAIRING ABERRATION IN RICE MEIOSIS1 of Rice Encodes a Putative Coiled-Coil Protein Required for Homologous Chromosome Pairing in Meiosis [PDF]
The Plant Cell Online, 2004 K. Nonomura +6 more
semanticscholar +2 more sources
Site-Specific Sequence Exchange Between Homologous and Non-homologous Chromosomes [PDF]
Frontiers in Plant Science, 2022 Transgene integration typically takes place in an easy-to-transform laboratory variety before the transformation event is introgressed through backcrosses to elite cultivars. As new traits are added to existing transgenic lines, site-specific integration can stack new transgenes into a previously created transgenic locus.
Qian Yin, Qian Yin, Ruyu Li, David W. Ow
openaire +3 more sources
iScience, 2022 Summary: Meiotic prophase I is a prolonged G2 phase that ensures the completion of numerous meiosis-specific chromosome events. During meiotic prophase I, homologous chromosomes undergo synapsis to facilitate meiotic recombination yielding crossovers. It
Nobuhiro Tanno +8 more
doaj +1 more source
Frontiers in Plant Science, 2019 Polyploid organisms provide additional opportunities to study meiosis in a more complex context since more than two potential homologous chromosomes are available.
Pablo Parra-Nunez +2 more
doaj +1 more source
Meiotic Chromosome Dynamics in Zebrafish
Frontiers in Cell and Developmental Biology, 2021 Recent studies in zebrafish have revealed key features of meiotic chromosome dynamics, including clustering of telomeres in the bouquet configuration, biogenesis of chromosome axis structures, and the assembly and disassembly of the synaptonemal complex ...
Yukiko Imai +5 more
doaj +1 more source
Molecular Cytogenetics, 2022 Abstract Background The history of comparative chromosome mapping is briefly reviewed, with discussion about the problem that occurs in chromosome painting when size heteromorphisms between homologues cause contamination in chromosomes sorted by flow cytometry that are used in the preparation of chromosome-specific DNA ...
Ferguson-Smith, Malcolm A +3 more
openaire +4 more sources