Results 21 to 30 of about 38,555 (288)

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

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   +3 more sources

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

Capturing chaotic chromosomes: Pairing in action [PDF]

Molecular Reproduction and Development, 2018
Accurate chromosome segregation is critical for the formation of haploid gametes, and therefore healthy offspring. Errors in segregation result in aneuploidy, which increases exponentially with maternal age (Hassold and Hunt, 2001). Maternally aged mouse oocytes were recently found to exhibit premature sister chromatid separation due to reduced levels ...
Bertucci, Micka C., Das, Arunika, Fitzgerald, Harriet C., Goszczynski, Daniel Estanislao   +3 more
openaire   +3 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

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
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Chromosome 5P of Agropyron cristatum induces chromosomal translocation by disturbing homologous chromosome pairing in a common wheat background

Crop Journal, 2023
Wide hybridization is a strategy for broadening the genetic basis of wheat. Because an efficient method for inducing wheat–alien chromosome translocations will allow producing useful germplasm, it is desirable to discover new genes that induce ...
Haiming Han, Xinyuan Ma, Zhen Wang, Kai Qi, Wenjing Yang, Weihua Liu, Jinpeng Zhang, Shenghui Zhou, Yuqing Lu, Xinming Yang, Xiuquan Li, Lihui Li   +11 more
doaj   +1 more source

Meiotic Nuclear Oscillations Are Necessary to Avoid Excessive Chromosome Associations

Cell 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, Petrina Delivani, Iva M. Tolić   +2 more
doaj   +1 more source