Results 21 to 30 of about 42,068 (256)

Chromosome movements promoted by the mitochondrial protein SPD-3 are required for homology search during Caenorhabditis elegans meiosis.

PLoS Genetics, 2013
Pairing of homologous chromosomes during early meiosis is essential to prevent the formation of aneuploid gametes. Chromosome pairing includes a step of homology search followed by the stabilization of homolog interactions by the synaptonemal complex (SC)
Leticia Labrador, Consuelo Barroso, James Lightfoot, Thomas Müller-Reichert, Stephane Flibotte, Jon Taylor, Donald G Moerman, Anne M Villeneuve, Enrique Martinez-Perez   +8 more
doaj   +1 more source

Competition of Parental Genomes in Plant Hybrids

Frontiers 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, Václav Bačovský, Roman Hobza, Roman Hobza, David Kopecký   +4 more
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Mechanics and dynamics of X-chromosome pairing at X inactivation. [PDF]

PLoS Computational Biology, 2008
At the onset of X-chromosome inactivation, the vital process whereby female mammalian cells equalize X products with respect to males, the X chromosomes are colocalized along their Xic (X-inactivation center) regions.
Antonio Scialdone, Mario Nicodemi
doaj   +1 more source

MNM and SNM maintain but do not establish achiasmate homolog conjunction during Drosophila male meiosis.

PLoS Genetics, 2019
The first meiotic division reduces genome ploidy. This requires pairing of homologous chromosomes into bivalents that can be bi-oriented within the spindle during prometaphase I.
Michael Shoujie Sun, Joe Weber, Ariane C Blattner, Soumya Chaurasia, Christian F Lehner   +4 more
doaj   +1 more source

Identification of 5P Chromosomes in Wheat-Agropyron cristatum Addition Line and Analysis of Its Effect on Homologous Pairing of Wheat Chromosomes

Frontiers in Plant Science, 2022
As an important wheat wild relative, the P genome of Agropyron cristatum (L.) Gaertn. (2n = 4x = 28) is very valuable for wheat improvement. A complete set of wheat-A.
Cuili Pan, Cuili Pan, Qingfeng Li, Qingfeng Li, Haiming Han, Jinpeng Zhang, Shenghui Zhou, Xinming Yang, Xiuquan Li, Lihui Li, Weihua Liu   +10 more
doaj   +1 more source

CYTOGENETICS OF CHROMOSOME PAIRING IN WHEAT [PDF]

Genetics, 1974
ABSTRACT Meiotic chromosome pairing in Triticum aestivum is controlled by genetic systems promoting and reducing pairing. The pairing of homoeologous chromosomes is prevented principally by the activity of a single locus (Ph) distally located on the long arm of chromosome 5B.
openaire   +2 more sources

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

PLoS 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, G Valentin Börner, Shawn D Ryan   +2 more
doaj   +1 more source

Multiple opposing constraints govern chromosome interactions during meiosis.

PLoS Genetics, 2013
Homolog pairing and crossing over during meiosis I prophase is required for accurate chromosome segregation to form euploid gametes. The repair of Spo11-induced double-strand breaks (DSB) using a homologous chromosome template is a major driver of ...
Doris Y Lui, Cori K Cahoon, Sean M Burgess   +2 more
doaj   +1 more source

Cryptic homoeology analysis in species and hybrids of genus Zea

Biologia Plantarum, 2013
Cryptic intergenomic pairing of genus Zea was induced by the use of a diluted colchicine solution in order to elucidate the phylogenetic relations and differentiation of the homoeologous genomes. Results indicate that in species and hybrids with 2n = 20,
M. C. del Molina, C. G. López, S. Staltari, S. E. Chorzempa, V. Moreno Ferrero   +4 more
doaj   +1 more source

A Possible Effect of Heterochromatin on Chromosome Pairing [PDF]

Proceedings of the National Academy of Sciences, 1974
Rye chromosomes were selectively stained in the meiosis of triticale by means of heterochromatin banding techniques. Compared to wheat chromosomes, rye chromosomes showed reduced pairing at first meiotic metaphase. Within the rye genome this pairing failure was associated with the presence of large, terminal heterochromatic bands.
J B, Thomas, P J, Kaltsikes
openaire   +2 more sources