Results 31 to 40 of about 1,130,741 (368)

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

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

Pushing the (nuclear) envelope into meiosis. [PDF]

open access: yes, 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

Observations on chromosome-specific sequencing for the construction of cross-species chromosome homology maps and its resolution of human:alpaca homology

open access: yesMolecular 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

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

Condensin II resolves chromosomal associations to enable anaphase I segregation in Drosophila male meiosis. [PDF]

open access: yesPLoS Genetics, 2008
Several meiotic processes ensure faithful chromosome segregation to create haploid gametes. Errors to any one of these processes can lead to zygotic aneuploidy with the potential for developmental abnormalities.
Tom A Hartl   +3 more
doaj   +1 more source

Partial duplication of the APBA2 gene in chromosome 15q13 corresponds to duplicon structures. [PDF]

open access: yes, 2003
BackgroundChromosomal abnormalities affecting human chromosome 15q11-q13 underlie multiple genomic disorders caused by deletion, duplication and triplication of intervals in this region.
Amin, Taneem   +4 more
core   +2 more sources

The BRCA Tumor Suppressor Network in Chromosome Damage Repair by Homologous Recombination.

open access: yesAnnual Review of Biochemistry, 2019
Mutations in the BRCA1 and BRCA2 genes predispose afflicted individuals to breast, ovarian, and other cancers. The BRCA-encoded products form complexes with other tumor suppressor proteins and with the recombinase enzyme RAD51 to mediate chromosome ...
Weixing Zhao   +4 more
semanticscholar   +1 more source

Improved reconstruction and comparative analysis of chromosome 12 to rectify Mis-assemblies in Gossypium arboreum

open access: yesBMC Genomics, 2020
Background Genome sequencing technologies have been improved at an exponential pace but precise chromosome-scale genome assembly still remains a great challenge. The draft genome of cultivated G.
Javaria Ashraf   +10 more
doaj   +1 more source

Rad54: the Swiss Army knife of homologous recombination? [PDF]

open access: yes, 2006
Homologous recombination (HR) is a ubiquitous cellular pathway that mediates transfer of genetic information between homologous or near homologous (homeologous) DNA sequences. During meiosis it ensures proper chromosome segregation in the first division.
Heyer, Wolf-Dietrich   +3 more
core   +2 more sources

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