Results 1 to 10 of about 319,606 (332)

FIGNL1 Inhibits Non-homologous Chromosome Association and Crossover Formation [PDF]

Frontiers in Plant Science, 2022
Meiotic crossovers (COs) not only generate genetic diversity but also ensure the accuracy of homologous chromosome segregation. Here, we identified FIGNL1 as a new inhibitor for extra crossover formation in rice.
Shuying Yang, Shuying Yang, Shuying Yang, Chao Zhang, Yiwei Cao, Yiwei Cao, Guijie Du, Ding Tang, Yafei Li, Yi Shen, Hengxiu Yu, Zhukuan Cheng, Zhukuan Cheng, Zhukuan Cheng   +13 more
doaj   +2 more sources

Homologous chromosome pairing starts at the ends. [PDF]

Plant Physiol
De Jaeger-Braet J.
europepmc   +5 more sources

Chromosome architecture and homologous recombination in meiosis

Frontiers in Cell and Developmental Biology, 2023
Meiocytes organize higher-order chromosome structures comprising arrays of chromatin loops organized at their bases by linear axes. As meiotic prophase progresses, the axes of homologous chromosomes align and synapse along their lengths to form ladder ...
Masaru Ito, Akira Shinohara
doaj   +3 more sources

Telomeres and Subtelomeres Dynamics in the Context of Early Chromosome Interactions During Meiosis and Their Implications in Plant Breeding

Frontiers in Plant Science, 2021
Genomic architecture facilitates chromosome recognition, pairing, and recombination. Telomeres and subtelomeres play an important role at the beginning of meiosis in specific chromosome recognition and pairing, which are critical processes that allow ...
Miguel Aguilar, Pilar Prieto
doaj   +1 more source

Formation of the synaptonemal complex in a gynogenetic allodiploid hybrid fish

Frontiers in Genetics, 2023
Introduction: The correct pairing and separation of homologous chromosomes during meiosis is crucial to ensure both genetic stability and genetic diversity within species. In allodiploid organisms, synapsis often fails, leading to sterility.
Jing Wang, Wen Wang, Jihong Li, Yirui Zhang, Kaikun Luo, Linmei Han, Caixia Xiang, Mingli Chai, Ziye Luo, Rurong Zhao, Shaojun Liu   +10 more
doaj   +1 more source

Haploidy of somatic cells in mouse oocyte using somatic cell nuclear transfer

Journal of Animal Reproduction and Biotechnology, 2022
Haploidization in somatic cells is the process of reducing the diploid somatic chromosomes to haploid. Several studies have attempted somatic haploidization using oocytes in mice and humans.
Yeonmi Lee , Eunju Kang
doaj   +1 more source

Differing requirements for RAD51 and DMC1 in meiotic pairing of centromeres and chromosome arms in Arabidopsis thaliana. [PDF]

PLoS Genetics, 2012
During meiosis homologous chromosomes pair, recombine, and synapse, thus ensuring accurate chromosome segregation and the halving of ploidy necessary for gametogenesis.
Olivier Da Ines, Kiyomi Abe, Chantal Goubely, Maria Eugenia Gallego, Charles I White   +4 more
doaj   +1 more source

Characterization of meiotic chromosome behavior in the autopolyploid Saccharum spontaneum reveals preferential chromosome pairing without distinct DNA sequence variation

Crop Journal, 2023
Autopolyploidy and allopolyploidy may represent an evolutionary advantage and are more common in plants than assumed. However, less attention has been paid to autopolyploidy than to allopolyploidy, and its evolutionary consequences are largely unclear ...
Xin Zhang, Zhuang Meng, Jinlei Han, Haris Khurshid, Ayman Esh, Robert Hasterok, Kai Wang   +6 more
doaj   +1 more source

Dispersive forces and resisting spot welds by alternative homolog conjunction govern chromosome shape in Drosophila spermatocytes during prophase I.

PLoS Genetics, 2022
The bivalent chromosomes that are generated during prophase of meiosis I comprise a pair of homologous chromosomes. Homolog pairing during prophase I must include mechanisms that avoid or eliminate entanglements between non-homologous chromosomes.
Luisa Vernizzi, Christian F Lehner
doaj   +1 more source

Dynamics of rye chromosome 1R regions with high or low crossover frequency in homology search and synapsis development. [PDF]

PLoS ONE, 2012
In many organisms, homologous pairing and synapsis depend on the meiotic recombination machinery that repairs double-strand DNA breaks (DSBs) produced at the onset of meiosis.
Nohelia T Valenzuela, Esther Perera, Tomás Naranjo   +2 more
doaj   +1 more source