Results 11 to 20 of about 314,723 (346)

Site-Specific Sequence Exchange Between Homologous and Non-homologous Chromosomes [PDF]

Frontiers in Plant Science, 2022
Transgene integration typically takes place in an easy-to-transform laboratory variety before the transformation event is introgressed through backcrosses to elite cultivars. As new traits are added to existing transgenic lines, site-specific integration can stack new transgenes into a previously created transgenic locus.
Qian Yin, Qian Yin, Ruyu Li, David W. Ow
openaire   +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

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

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

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

The Ecm11-Gmc2 complex promotes synaptonemal complex formation through assembly of transverse filaments in budding yeast [PDF]

, 2013
During meiosis, homologous chromosomes pair at close proximity to form the synaptonemal complex (SC). This association is mediated by transverse filament proteins that hold the axes of homologous chromosomes together along their entire length. Transverse
AB Zavec, AB Zavec, AJ Macqueen, AV Smith, B Kemp, B Rockmill, B Rockmill, Bilge Argunhan, BL Schneider, CE de Carvalho, CH Cheng, CM Lake, CS Eichinger, DK Bishop, E Alani, E Bolcun-Filas, F Storici, FM Lin, G Hamer, GA Brar, GV Börner, GW Hooker, H Tsubouchi, H Tsubouchi, H Tsubouchi, Hideo Tsubouchi, J Perry, JE Falk, JL Gerton, JR Hudson, L Newnham, M Lussier, M Petronczki, M Primig, M Shinohara, M Sym, M Sym, Martina Dvorackova, MN Gladstone, MS Longtine, N Hunter, Neil Humphryes, P James, PR Chua, R. Scott Hawley, S Agarwal, S Chu, S Farmer, S Schramm, SL Page, SY Chen, T Tsubouchi, T Tsubouchi, T Tsubouchi, Wing-Kit Leung, Y Costa, Yaroslav Terentyev   +56 more
core   +9 more sources

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

Chromosomally-retained RNA mediates homologous pairing [PDF]

Nucleus, 2012
Pairing and recombination of homologous chromosomes are essential for ensuring correct segregation of chromosomes in meiosis. In S. pombe, chromosomes are first bundled at the telomeres (forming a telomere bouquet) and then aligned by oscillatory movement of the elongated "horsetail" nucleus.
Ding, Da-Qiao, Haraguchi, Tokuko, Hiraoka, Yasushi   +2 more
openaire   +2 more sources