Results 21 to 30 of about 319,606 (332)

Distance between homologous chromosomes results from chromosome positioning constraints [PDF]

Journal of Cell Science, 2010
The organization of chromosomes is important for various biological processes and is involved in the formation of rearrangements often observed in cancer. In mammals, chromosomes are organized in territories that are radially positioned in the nucleus. However, it remains unclear whether chromosomes are organized relative to each other.
Heride, Claire, Ricoul, Michelle, Kiêu, Kiên, von Hase, Johann, Guillemot, Vincent, Cremer, Christoph, Dubrana, Karine, Sabatier, Laure   +7 more
openaire   +4 more sources

Competition for Chiasma Formation Between Identical and Homologous (But Not Identical) Chromosomes in Synthetic Autotetraploids of Arabidopsis thaliana

Frontiers in Plant Science, 2019
Polyploid organisms provide additional opportunities to study meiosis in a more complex context since more than two potential homologous chromosomes are available.
Pablo Parra-Nunez, Mónica Pradillo, Juan Luis Santos   +2 more
doaj   +1 more source

PAR-TERRA directs homologous sex chromosome pairing [PDF]

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. Here, we reveal a required interaction between the X-inactivation center (Xic) and the telomere in mouse embryonic stem (ES ...
Hsueh‐Ping Chu, John E. Froberg, Barry Kesner, Hyun Jung Oh, Fei Ji, Ruslan I. Sadreyev, Stefan F. Pinter, Jeannie T. Lee   +7 more
openalex   +5 more sources

Meiotic Chromosome Dynamics in Zebrafish

Frontiers in Cell and Developmental Biology, 2021
Recent studies in zebrafish have revealed key features of meiotic chromosome dynamics, including clustering of telomeres in the bouquet configuration, biogenesis of chromosome axis structures, and the assembly and disassembly of the synaptonemal complex ...
Yukiko Imai, Ivan Olaya, Ivan Olaya, Noriyoshi Sakai, Noriyoshi Sakai, Sean M. Burgess   +5 more
doaj   +1 more source

A recurrent translocation is mediated by homologous recombination between HERV-H elements

Molecular Cytogenetics, 2012
Background Chromosome rearrangements are caused by many mutational mechanisms; of these, recurrent rearrangements can be particularly informative for teasing apart DNA sequence-specific factors.
Hermetz Karen E, Surti Urvashi, Cody Jannine D, Rudd M Katharine   +3 more
doaj   +1 more source

Double in situ hybridization in combination with digital image analysis: A new approach to study interphase chromosome topography [PDF]

, 1989
Double in situ hybridization with mercurated and biotinylated chromosome specific DNA probes in combination with digital image analysis provides a new approach to compare the distribution of homologous and nonhomologous chromosome targets within ...
Cremer, Christoph, Cremer, Thomas, Emmerich, Patricia, Higgins, Michael J., Hopman, Anton H. N., Jauch, Anna, Loos, Peter, Van Der Ploeg, Mels, White, Bradley N., Wiegant, Joop   +9 more
core   +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

The Origin of a New Sex Chromosome by Introgression between Two Stickleback Fishes. [PDF]

, 2019
Introgression is increasingly recognized as a source of genetic diversity that fuels adaptation. Its role in the evolution of sex chromosomes, however, is not well known. Here, we confirm the hypothesis that the Y chromosome in the ninespine stickleback,
Abbott, Alexander, Anders, Bachtrog, Bachtrog, Bachtrog, Bronson, Browning, Carling, Carneiro, Charlesworth, Charlesworth, Choi, Cook, Corcoran, Coyne, Coyne, Danecek, DePristo, Edwards, Glazer, Green, Groves Dixon, Hagen, Irwin, Ishikawa, JanouŠek, Jay, Jombart, Jombart, Jun Kitano, Krueger, Langmead, Li, Li, Lindholm, Love, Luo, Mark Kirkpatrick, Martin, Martin, Martin, Meguro, Melissa Wilson Sayres, Muirhead, Natri, Neafsey, Nei, O’Neill, Payseur, Petit, Presgraves, Quinlan, Ravinet, Ross, Saetre, Sankararaman, Schwander, Sciuchetti, Smit, Stamatakis, Storchová, Stölting, Sun, Takahashi, Takahashi, Toews, Tosi, Toups, Tuttle, van Doorn, Vicoso, von Hippel, Wang, White, Yang, Yoshida, Yoshida, Úbeda   +78 more
core   +1 more source

Direct and indirect control of the initiation of meiotic recombination by DNA damage checkpoint mechanisms in budding yeast [PDF]

, 2013
Meiotic recombination plays an essential role in the proper segregation of chromosomes at meiosis I in many sexually reproducing organisms. Meiotic recombination is initiated by the scheduled formation of genome-wide DNA double-strand breaks (DSBs).
AJ MacQueen, AL Goldstein, BH Lee, Bilge Argunhan, C Buhler, CY Bonilla, E Martini, EF Joyce, G Vader, H Sasanuma, H Sun, H Toyoizumi, H Tsubouchi, H-C Ho, H-Y Wu, HG Blitzblau, Hideo Tsubouchi, Hiroshi Toyoizumi, J Lange, JC Harrison, JE Haber, JL Gerton, KA Henderson, KS Tung, L Wan, L Xu, L Zou, M Lichten, M Lisby, M Petronczki, Michael Lichten, MJ Neale, Neil Humphryes, S Chu, S Farmer, S Farmer, S Keeney, Sarah Farmer, Tomomi Tsubouchi, Wing-Kit Leung, Yaroslav Terentyev   +40 more
core   +7 more sources

Improved reconstruction and comparative analysis of chromosome 12 to rectify Mis-assemblies in Gossypium arboreum

BMC Genomics, 2020
Background Genome sequencing technologies have been improved at an exponential pace but precise chromosome-scale genome assembly still remains a great challenge. The draft genome of cultivated G.
Javaria Ashraf, Dongyun Zuo, Hailiang Cheng, Waqas Malik, Qiaolian Wang, Youping Zhang, Muhammad Ali Abid, Qiuhong Yang, Xiaoxu Feng, John Z. Yu, Guoli Song   +10 more
doaj   +1 more source