Results 11 to 20 of about 191,808 (260)

THE HOMOLOGIES OF THE CHROMOSOME ELEMENTS IN THE GENUS DROSOPHILA [PDF]

open access: yesGenetics, 1941
Uploaded by Plazi for TaxoDros. We do not have abstracts.
A H, Sturtevant, E, Novitski
openaire   +2 more sources

Dispersive forces and resisting spot welds by alternative homolog conjunction govern chromosome shape in Drosophila spermatocytes during prophase I.

open access: yesPLoS 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
doaj   +1 more source

Dynamics of rye chromosome 1R regions with high or low crossover frequency in homology search and synapsis development. [PDF]

open access: yesPLoS 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]

open access: yesPLoS 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

open access: yesMicrobiology 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

Competition for Chiasma Formation Between Identical and Homologous (But Not Identical) Chromosomes in Synthetic Autotetraploids of Arabidopsis thaliana

open access: yesFrontiers 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

FBXO47 is essential for preventing the synaptonemal complex from premature disassembly in mouse male meiosis

open access: yesiScience, 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

Meiotic Chromosome Dynamics in Zebrafish

open access: yesFrontiers 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

A recurrent translocation is mediated by homologous recombination between HERV-H elements

open access: yesMolecular Cytogenetics, 2012
Background Chromosome rearrangements are caused by many mutational mechanisms; of these, recurrent rearrangements can be particularly informative for teasing apart DNA sequence-specific factors.
Hermetz Karen E   +3 more
doaj   +1 more source

HO Endonuclease-Initiated Recombination in Yeast Meiosis Fails To Promote Homologous Centromere Pairing and Is Not Constrained To Utilize the Dmc1 Recombinase

open access: yesG3: Genes, Genomes, Genetics, 2018
Crossover recombination during meiosis is accompanied by a dramatic chromosome reorganization. In Saccharomyces cerevisiae, the onset of meiotic recombination by the Spo11 transesterase leads to stable pairwise associations between previously ...
Lina Yisehak, Amy J. MacQueen
doaj   +1 more source

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