Results 41 to 50 of about 1,130,741 (368)

Association of homologous chromosomes during floral development [PDF]

Current Biology, 1997
Reduction in chromosome number and genetic recombination during meiosis require the prior association of homologous chromosomes, and this has been assumed to be a central event in meiosis. Various studies have suggested, however, that while the reduction division of meiosis is a universally conserved process, the pre-meiotic association of homologues ...
Graham Moore, Luis Aragón-Alcaide, Peter Shaw, T. E. Miller, S. M. Reader, Alison F. Beven   +5 more
openaire   +3 more sources

Chromosome-associated RNA–protein complexes promote pairing of homologous chromosomes during meiosis in Schizosaccharomyces pombe

Nature Communications, 2019
Pairing of homologous chromosomes in meiosis is essential for sexual reproduction. We have previously demonstrated that the fission yeast sme2 RNA, a meiosis-specific long noncoding RNA (lncRNA), accumulates at the sme2 chromosomal loci and mediates ...
Da‐Qiao Ding, Kasumi Okamasa, Y. Katou, Eriko Oya, J. Nakayama, Y. Chikashige, K. Shirahige, T. Haraguchi, Y. Hiraoka   +8 more
semanticscholar   +1 more source

ASYNAPSIS 1 ensures crossover fidelity in polyploid wheat by promoting homologous recombination and suppressing non-homologous recombination

Frontiers in Plant Science, 2023
During meiosis, the chromosome axes and synaptonemal complex mediate chromosome pairing and homologous recombination to maintain genomic stability and accurate chromosome segregation.
Chiara Di Dio, Heïdi Serra, Pierre Sourdille, James D. Higgins   +3 more
doaj   +1 more source

Human chromosome 19 homologies. [PDF]

Genome Biology, 2001
Gene sequence conservation and lineage-specific evolution are revealed by analysis of homologous sequences in human and mouse.
openaire   +2 more sources

HO Endonuclease-Initiated Recombination in Yeast Meiosis Fails To Promote Homologous Centromere Pairing and Is Not Constrained To Utilize the Dmc1 Recombinase

G3: Genes, Genomes, Genetics, 2018
Crossover recombination during meiosis is accompanied by a dramatic chromosome reorganization. In Saccharomyces cerevisiae, the onset of meiotic recombination by the Spo11 transesterase leads to stable pairwise associations between previously ...
Lina Yisehak, Amy J. MacQueen
doaj   +1 more source

Mouse oocytes carrying metacentric Robertsonian chromosomes have fewer crossover sites and higher aneuploidy rates than oocytes carrying acrocentric chromosomes alone

Scientific Reports, 2022
Meiotic homologous recombination during fetal development dictates proper chromosome segregation in adult mammalian oocytes. Successful homologous synapsis and recombination during Meiotic Prophase I (MPI) depends on telomere-led chromosome movement ...
Parinaz Kazemi, Teruko Taketo
doaj   +1 more source

The courtship choreography of homologous chromosomes: timing and mechanisms of DSB-independent pairing

Frontiers in Cell and Developmental Biology, 2023
Meiosis involves deep changes in the spatial organisation and interactions of chromosomes enabling the two primary functions of this process: increasing genetic diversity and reducing ploidy level.
Mireia Solé, Álvaro Pascual, Ester Anton, Joan Blanco, Zaida Sarrate   +4 more
doaj   +1 more source

Chromosome assignment of two cloned DNA probes hybridizing predominantly to human sex chromosomes [PDF]

, 1984
In situ hybridization experiments were carried out with two clones, YACG 35 and 2.8, which had been selected from two genomic libraries strongly enriched for the human Y chromosome.
A Chapelle de la, AJ Solari, AJ Solari, BD Young, BR Migeon, C Cremer, CR M�ller, CR M�ller, D Page, DT Denhardt, EMJ Southern, GM Wahl, J Fantes, JBS Haldane, JW Gray, KE Davies, L Zech, LM Kunkel, LM Kunkel, MJ Moses, P Goodfellow, P Leder, P Polani, PK Horan, PL Pearson, PN Dean, PN Dean, PN Goodfellow, PS Burgoyne, PS Gerhard, R Krumlauf, RG Langlois, SP Daiger, T Mohandas, U M�ller   +34 more
core   +1 more source

PAR-TERRA directs homologous sex chromosome pairing

Nature Structural &Molecular Biology, 2017
In mammals, homologous chromosomes rarely pair outside meiosis. One exception is the X chromosome, which transiently pairs during X-chromosome inactivation (XCI). How two chromosomes find each other in 3D space is not known.
H. Chu, John E. Froberg, Barry A. Kesner, H. Oh, Fei Ji, R. Sadreyev, Stefan F. Pinter, Jeannie T. Lee   +7 more
semanticscholar   +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.
Da-Qiao Ding, Tokuko Haraguchi, Yasushi Hiraoka   +2 more
openaire   +3 more sources