Results 21 to 30 of about 10,302 (256)

Privación sensorial temprana durante el neurodesarrollo y sus consecuencias cognitivas

open access: yesMedicina 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

ZIP4 is required for normal progression of synapsis and for over 95% of crossovers in wheat meiosis

open access: yesFrontiers 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

Contribution of Tau Pathology to Mitochondrial Impairment in Neurodegeneration

open access: yesFrontiers in Neuroscience, 2018
Tau is an essential protein that physiologically promotes the assembly and stabilization of microtubules, and participates in neuronal development, axonal transport, and neuronal polarity.
María J. Pérez   +5 more
doaj   +1 more source

Centromeric SMC1 promotes centromere clustering and stabilizes meiotic homolog pairing.

open access: yesPLoS 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

Meiotic Chromosome Stability and Suppression of Crossover Between Non-homologous Chromosomes in xBrassicoraphanus, an Intergeneric Allotetraploid Derived From a Cross Between Brassica rapa and Raphanus sativus

open access: yesFrontiers 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

Crossover interference mechanism: New lessons from plants

open access: yesFrontiers in Cell and Developmental Biology, 2023
Plants are the source of our understanding of several fundamental biological principles. It is well known that Gregor Mendel discovered the laws of Genetics in peas and that maize was used for the discovery of transposons by Barbara McClintock.
Nahid Rafiei, Arnaud Ronceret
doaj   +1 more source

Cytotoxicity and Effects on the Synapsis Induced by Pure Cylindrospermopsin in an E17 Embryonic Murine Primary Neuronal Culture in a Concentration- and Time-Dependent Manner

open access: yesToxins, 2022
Cylindrospermopsin (CYN) is a cyanotoxin whose incidence has been increasing in the last decades. Due to its capacity to exert damage at different levels of the organism, it is considered a cytotoxin.
María G. Hinojosa   +6 more
doaj   +1 more source

Chromosome Organization in Early Meiotic Prophase

open access: yesFrontiers in Cell and Developmental Biology, 2021
One of the most fascinating aspects of meiosis is the extensive reorganization of the genome at the prophase of the first meiotic division (prophase I). The first steps of this reorganization are observed with the establishment of an axis structure, that
Corinne Grey, Bernard de Massy
doaj   +1 more source

Meiotic Synapsis in the Absence of Recombination [PDF]

open access: yesScience, 1998
Although in Saccharomyces cerevisiae the initiation of meiotic recombination, as indicated by double-strand break formation, appears to be functionally linked to the initiation of synapsis, meiotic chromosome synapsis in Drosophila females occurs in the absence of meiotic exchange.
K S, McKim   +6 more
openaire   +2 more sources

Phospho-Regulation of Meiotic Prophase

open access: yesFrontiers in Cell and Developmental Biology, 2021
Germ cells undergoing meiosis rely on an intricate network of surveillance mechanisms that govern the production of euploid gametes for successful sexual reproduction.
Funda M. Kar, Andreas Hochwagen
doaj   +1 more source

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