Results 21 to 30 of about 1,161,690 (369)
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
Crop Journal, 2023 Autopolyploidy and allopolyploidy may represent an evolutionary advantage and are more common in plants than assumed. However, less attention has been paid to autopolyploidy than to allopolyploidy, and its evolutionary consequences are largely unclear ...
Xin Zhang +6 more
doaj +1 more source
PLoS Genetics, 2022 The bivalent chromosomes that are generated during prophase of meiosis I comprise a pair of homologous chromosomes. Homolog pairing during prophase I must include mechanisms that avoid or eliminate entanglements between non-homologous chromosomes.
Luisa Vernizzi, Christian F Lehner
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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
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
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
A surge of late-occurring meiotic double-strand breaks rescues synapsis abnormalities in spermatocytes of mice with hypomorphic expression of SPO11 [PDF]
, 2015 Meiosis is the biological process that, after a cycle of DNA replication, halves the cellular chromosome complement, leading to the formation of haploid gametes.
Barchi, Marco +9 more
core +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
Pushing the (nuclear) envelope into meiosis. [PDF]
, 2013 A recent study shows that a short isoform of a mammalian nuclear lamin is important for homologous chromosome interactions during meiotic prophase in ...
Dernburg, Abby F
core +1 more source