Results 21 to 30 of about 74,508 (147)

The intrinsic ability of double-stranded DNA to carry out D-loop and R-loop formation

open access: yesComputational and Structural Biotechnology Journal, 2020
Double-stranded (ds)DNA, not dsRNA, has an ability to form a homologous complex with single-stranded (ss)DNA or ssRNA of homologous sequence. D-loops and homologous triplexes are homologous complexes formed with ssDNA by RecA/Rad51-family homologous ...
Takehiko Shibata   +2 more
doaj   +1 more source

Modeling cell biological features of meiotic chromosome pairing to study interlock resolution.

open access: yesPLoS Computational Biology, 2022
During meiosis, homologous chromosomes become associated side by side in a process known as homologous chromosome pairing. Pairing requires long range chromosome motion through a nucleus that is full of other chromosomes.
Erik J Navarro   +2 more
doaj   +1 more source

Competition of Parental Genomes in Plant Hybrids

open access: yesFrontiers in Plant Science, 2020
Interspecific hybridization represents one of the main mechanisms of plant speciation. Merging of two genomes from different subspecies, species, or even genera is frequently accompanied by whole-genome duplication (WGD).
Marek Glombik   +4 more
doaj   +1 more source

Synaptonemal complex components persist at centromeres and are required for homologous centromere pairing in mouse spermatocytes. [PDF]

open access: yesPLoS Genetics, 2012
Recent studies in simple model organisms have shown that centromere pairing is important for ensuring high-fidelity meiotic chromosome segregation. However, this process and the mechanisms regulating it in higher eukaryotes are unknown.
C Gaston Bisig   +6 more
doaj   +1 more source

Meiotic Nuclear Oscillations Are Necessary to Avoid Excessive Chromosome Associations

open access: yesCell Reports, 2016
Pairing of homologous chromosomes is a crucial step in meiosis, which in fission yeast depends on nuclear oscillations. However, how nuclear oscillations help pairing is unknown.
Mariola R. Chacón   +2 more
doaj   +1 more source

Identification of genes that promote or antagonize somatic homolog pairing using a high-throughput FISH-based screen.

open access: yesPLoS Genetics, 2012
The pairing of homologous chromosomes is a fundamental feature of the meiotic cell. In addition, a number of species exhibit homolog pairing in nonmeiotic, somatic cells as well, with evidence for its impact on both gene regulation and double-strand ...
Eric F Joyce   +3 more
doaj   +1 more source

Theory of phase segregation in DNA assemblies containing two different base pair sequence types [PDF]

open access: yes, 2016
Spontaneous pairing of homologous DNA sequences – a challenging subject in molecular biophysics, often referred to as ‘homology recognition’ – ha s been observed in vitro for several DNA system s a . One of th e se experiments involved liquid crystalline
Kornyshev, AA, Lee, DJ, Wynveen, A
core   +1 more source

Agent-based modeling of nuclear chromosome ensembles identifies determinants of homolog pairing during meiosis.

open access: yesPLoS Computational Biology
During meiosis, pairing of homologous chromosomes (homologs) ensures the formation of haploid gametes from diploid precursor cells, a prerequisite for sexual reproduction.
Ariana Chriss   +2 more
doaj   +1 more source

Which one is the real matchmaker for the pair?

open access: yesAsian Journal of Andrology, 2014
A fundamental question for meiosis is how homologous chromosomes (homologs) find each other and pair together to ensure homologous recombination and segregation.
Chunsheng Han
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

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