Results 81 to 90 of about 2,412 (170)

LAB-1 Targets PP1 and Restricts Aurora B Kinase upon Entrance into Meiosis to Promote Sister Chromatid Cohesion [PDF]

, 2012
Successful execution of the meiotic program depends on the timely establishment and removal of sister chromatid cohesion. LAB-1 has been proposed to act in the latter by preventing the premature removal of the meiosis-specific cohesin REC-8 at metaphase ...
Carvalho, Carlos Egydio de, Cheeseman, Iain McPherson, Chu, Diana S., Colaiacovo, Monica P., Gu, Yanjie, Nadarajan, Saravanapriah, Tzur, Yonatan B., Van Bostelen, Ivo   +7 more
core   +5 more sources

Ribosomal DNA clusters and telomeric (TTAGG)n repeats in blue butterflies (Lepidoptera, Lycaenidae) with low and high chromosome numbers

Comparative Cytogenetics, 2015
Ribosomal DNA clusters and telomeric repeats are important parts of eukaryotic genome. However, little is known about their organization and localization in karyotypes of organisms with holocentric chromosomes.
Alisa O. Vershinina, Boris A. Anokhin, Vladimir A. Lukhtanov   +2 more
doaj   +1 more source

Genome analysis of Diploscapter coronatus: insights into molecular peculiarities of a nematode with parthenogenetic reproduction [PDF]

, 2017
BACKGROUND: Sexual reproduction involving the fusion of egg and sperm is prevailing among eukaryotes. In contrast, the nematode Diploscapter coronatus, a close relative of the model Caenorhabditis elegans, reproduces parthenogenetically.
Hiraki, H, Kagoshima, H, Kohara, Y, Kraus, C, Kroiher, M, Schierenberg, E, Schiffer, PH, Ueta, Y   +7 more
core   +2 more sources

Reconstruction of the kinetochore: a prelude to meiosis [PDF]

, 2007
In eukaryotic organisms, chromosomes are spatially organized within the nucleus. Such nuclear architecture provides a physical framework for the genetic activities of chromosomes, and changes its functional organization as the cell moves through the ...
Haruhiko Asakawa, Tokuko Haraguchi, Yasushi Hiraoka   +2 more
core   +1 more source

Morphological and genomic characterization of Rhynchospora tenuis complex (Cyperaceae) and its taxonomic implications

Rodriguésia
Species of Rhynchospora sect. Tenues are morphologically very similar. Rhynchospora tenuis complex is the most problematic species complex in this group and it concentrates entities of difficult delimitation, as is the case of R. tenuis, R. tenuis subsp.
Vanessa Silva Michelan, Rafael Trevisan, Carlos Roberto Maximiano da Silva, Rogério Fernandes de Souza, Modesto Luceño, André Luís Laforga Vanzela   +5 more
doaj   +1 more source

Localization of 45S rDNA and telomeric sites on holocentric chromosomes of Rhynchospora tenuis Link (Cyperaceae)

Genetics and Molecular Biology, 2003
Rhynchospora tenuis Link (Cyperaceae) is a weed widely distributed in Brazil that presents a small number of holocentric chromosomes (2n = 4) with some autopolyploid populations (2n = 8). The haploid number n = 2 is considered as a derivative of the base
André L.L. Vanzela, Angeles Cuadrado, Marcelo Guerra   +2 more
doaj   +1 more source

Meiotic chromosomes and nucleolar behavior in testicular cellas of the grassland spittlebugs Deois flavopicta, Mahanarva fimbriolata and Notozulia entreriana (Hemiptera, Auschenorrhyncha). [PDF]

, 2015
Spittlebugs annually infest pastures and cause severe damage, representing a serious problem for the tropical American beef cattle industry. Spittlebugs are an important biotic constraint to forage production and there is a lack of cytogenetic data for ...
BARBOSA, L. R., CASTANHOLE, M. M. U., ITOYAMA, M. M., PEREIRA, L. L. V., SOUZA, H. V. de, VALERIO, J. R.   +5 more
core  

Caenorhabditis elegans BUB-3 and SAN-1/MAD3 Spindle Assembly Checkpoint Components Are Required for Genome Stability in Response to Treatment with Ionizing Radiation [PDF]

, 2017
Relatively little is known about the cross-talk between the spindle assembly checkpoint and the DNA damage response, especially in multicellular organisms.
Adamo, Bailly, Beranek, Boulton, Brenner, Cadet, Chlebowicz, Clejan, Craig, Crittenden, Davis, De Antoni, Dickinson, Dobles, Dotiwala, Essex, Fang, Garber, Gartner, Gartner, González-Huici, Gorbsky, Hajeri, Hardwick, Holway, Hoyt, Hwang, Jaramillo-Lambert, Kim, Kim, Kitagawa, Lara-Gonzalez, Lawrence, Lemaire, Li, Magiera, Maringele, Moser, Musacchio, Muzzini, Neff, Nitta, Nystul, O’Connell, Palou, Paques, Primorac, Roerink, Schärer, Shonn, Sonneville, Stein, Tarailo, Ui, van Schendel, Wild   +55 more
core   +2 more sources

Chromosomal divergence and evolutionary inferences in Rhodniini based on the chromosomal location of ribosomal genes

Memorias do Instituto Oswaldo Cruz, 2013
In this study, we used fluorescence in situ hybridisation to determine the chromosomal location of 45S rDNA clusters in 10 species of the tribe Rhodniini (Hemiptera: Reduviidae: Triatominae).
Sebastian Pita, Francisco Panzera, Ines Ferrandis, Cleber Galvao, Andres Gomez-Palacio, Yanina Panzera   +5 more
doaj   +3 more sources

Incomplete Sterility of Chromosomal Hybrids: Implications for Karyotype Evolution and Homoploid Hybrid Speciation

Frontiers in Genetics, 2020
Heterozygotes for major chromosomal rearrangements such as fusions and fissions are expected to display a high level of sterility due to problems during meiosis. However, some species, especially plants and animals with holocentric chromosomes, are known
Vladimir A. Lukhtanov, Vlad Dincă, Vlad Dincă, Magne Friberg, Roger Vila, Christer Wiklund   +5 more
doaj   +1 more source