Results 31 to 40 of about 2,331,002 (344)

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

Determinants of Chromosome Architecture: Insulator Pairing in cis and in trans

PLoS Genetics, 2016
The chromosomes of multicellular animals are organized into a series of topologically independent looped domains. This domain organization is critical for the proper utilization and propagation of the genetic information encoded by the chromosome.
M. Fujioka, H. Mistry, P. Schedl, J. B. Jaynes   +3 more
semanticscholar   +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
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

Making tau amyloid models in vitro: a crucial and underestimated challenge

FEBS Letters, EarlyView.
This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley   +1 more source

Homoeologous Chromosomes From Two Hordeum Species Can Recognize and Associate During Meiosis in Wheat in the Presence of the Ph1 Locus

Frontiers in Plant Science, 2018
Understanding the system of a basic eukaryotic cellular mechanism like meiosis is of fundamental importance in plant biology. Moreover, it is also of great strategic interest in plant breeding since unzipping the mechanism of chromosome specificity ...
María C. Calderón, María-Dolores Rey, Antonio Martín, Pilar Prieto   +3 more
doaj   +1 more source