Privación sensorial temprana durante el neurodesarrollo y sus consecuencias cognitivas
Medicina U.P.B., 2020 La aparición progresiva de habilidades sensoriales, motoras y cognitivo-afectivas en el humano a lo largo de su desarrollo es un reflejo de cambios fisiológicos que se gestan al interior del sistema nervioso.
Juan Felipe Álvarez Restrepo +1 more
doaj +1 more source
The Formation of Bivalents and the Control of Plant Meiotic Recombination
Frontiers in Plant Science, 2021 During the first meiotic division, the segregation of homologous chromosomes depends on the physical association of the recombined homologous DNA molecules.
Yared Gutiérrez Pinzón +3 more
doaj +1 more source
Frontiers in Plant Science, 2020 Hybridization and polyploidization are major driving forces in plant evolution. Allopolyploids can be occasionally formed from a cross between distantly related species but often suffer from chromosome instability and infertility. xBrassicoraphanus is an
Hye Rang Park +15 more
doaj +1 more source
Atomic force microscopy shows that vaccinia topoisomerase IB generates filaments on DNA in a cooperative fashion [PDF]
, 2005 Type IB DNA topoisomerases cleave and rejoin one strand of the DNA duplex, allowing for the removal of supercoils generated during replication and transcription.
Dekker, Cees +5 more
core +2 more sources
Rad54: the Swiss Army knife of homologous recombination? [PDF]
, 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
ZIP4 is required for normal progression of synapsis and for over 95% of crossovers in wheat meiosis
Frontiers in Plant Science, 2023 Tetraploid (AABB) and hexaploid (AABBDD) wheat have multiple sets of similar chromosomes, with successful meiosis and preservation of fertility relying on synapsis and crossover (CO) formation only taking place between homologous chromosomes.
Tracie N. Draeger +6 more
doaj +1 more source
Controlled rotation mechanism of DNA strand exchange by the Hin serine recombinase. [PDF]
, 2016 DNA strand exchange by serine recombinases has been proposed to occur by a large-scale rotation of halves of the recombinase tetramer. Here we provide the first direct physical evidence for the subunit rotation mechanism for the Hin serine invertase ...
Johnson, Reid C +4 more
core +1 more source
A conserved filamentous assembly underlies the structure of the meiotic chromosome axis. [PDF]
, 2019 The meiotic chromosome axis plays key roles in meiotic chromosome organization and recombination, yet the underlying protein components of this structure are highly diverged.
Caballero, Iracema +10 more
core +4 more sources
Centromeric SMC1 promotes centromere clustering and stabilizes meiotic homolog pairing.
PLoS Genetics, 2019 During meiosis, each chromosome must selectively pair and synapse with its own unique homolog to enable crossover formation and subsequent segregation.
Talia Hatkevich +5 more
doaj +1 more source
Phosphorylation of chromosome core components may serve as axis marks for the status of chromosomal events during mammalian meiosis. [PDF]
PLoS Genetics, 2012 Meiotic recombination and chromosome synapsis between homologous chromosomes are essential for proper chromosome segregation at the first meiotic division. While recombination and synapsis, as well as checkpoints that monitor these two events, take place
Tomoyuki Fukuda +5 more
doaj +1 more source