Results 131 to 140 of about 78,527 (313)

Real time observation of anaphase in vitro. [PDF]

Proceedings of the National Academy of Sciences, 1996
We used digital fluorescence microscopy to make real-time observations of anaphase chromosome movement and changes in microtubule organization in spindles assembled in Xenopus egg extracts. Anaphase chromosome movement in these extracts resembled that seen in living vertebrate cells.
Arshad Desai, Edward D. Salmon, Andrew W. Murray   +2 more
openaire   +3 more sources

Strong Signatures of Selection on Candidate Genes Underlying Core Speciation Mechanisms in Desert Tortoises

Molecular Ecology Resources, EarlyView.
ABSTRACT Genomic incompatibilities and differential ecological adaptation are thought to be fundamental mechanisms of speciation. In this study, we generated a chromosome‐scale reference genome and annotation for Gopherus morafkai , the Sonoran Desert tortoise, and conducted a detailed analysis of genes under positive selection with its sister species,
Sarah M. Baty, Raúl Araya‐Donoso, Avery Paulsen, Avery Williams, Dale F. DeNardo, Kenro Kusumi, Greer A. Dolby   +6 more
wiley   +1 more source

LET-99-dependent spatial restriction of active force generators makes spindle's position robust [PDF]

arXiv, 2017
During the asymmetric division of the Caenorhabditis elegans nematode zygote, the polarity cues distribution and daughter cell fates depend on the correct positioning of the mitotic spindle, which results from both centering and cortical pulling forces.
arxiv  

“Breaking up is hard to do”: the formation and resolution of sister chromatid intertwines [PDF]

, 2014
The absolute necessity to resolve every intertwine between the two strands of the DNA double helix provides a massive challenge to the cellular processes that duplicate and segregate chromosomes.
Bartkova, Baumann, Baxter, Baxter, Baxter, Bermejo, Bester, Branzei, Branzei, Brill, Burrell, Bzymek, Cejka, Champoux, Champoux, Chan, Chan, Chang, Chu, Crisona, Cuylen, Cuylen, Delbrück, Di Micco, Dominguez-Sola, Ekholm-Reed, Farcas, Fernandez, Gandhi, Gangloff, Gerlich, Germann, Giet, Goodwin, Gorgoulis, Halazonetis, Hardy, Hawkins, Hendzel, Hiasa, Hiasa, Hiasa, Hills, Hirano, Hirano, Hirano, Holm, Hsu, Jonathan Baxter, Kato, Kato, Khodursky, Khodursky, Kimura, Kimura, Kitamura, Koshland, Kreuzer, Kueng, Lavoie, Leman, Lucas, Mantiero, Maresca, Marston, Martinez-Robles, Matos, McClendon, McClintock, McGlynn, McGuffee, Mullen, Naughton, Neelsen, Newport, Oliveira, Ono, Paulson, Peter, Postow, Rattner, Rybenkov, Rybenkov, Sakaguchi, Samejima, Schoeffler, Schvartzman, Shamu, Shintomi, Spruck, Stuchinskaya, Sullivan, Sundin, Sundin, Suski, Symington, Szakal, Tedeschi, Temime-Smaali, Toledo, Vologodskii, Vos, Wang, Wang, Wang, Watson, Watson, Wei, Wilkins, Zechiedrich, Zechiedrich   +110 more
core   +1 more source

The multilayer regulation of the metaphase-to-anaphase transition [PDF]

Cell Cycle, 2009
The fluctuating activity of the cyclin-dependent kinases (Cdks) is critical for the periodic phosphorylation of a given Cdk substrate. Previous studies have been focus on the positive role of Cdk-dependent protein phosphorylation in cell cycle progression.
Yanchang Wang, Fengzhi Jin, Daniel Richmond   +2 more
openaire   +3 more sources

Resetting a functional G1 nucleus after mitosis [PDF]

, 2016
© The Author(s) 2015. The maintenance of the correct cellular information goes beyond the simple transmission of an intact genetic code from one generation to the next. Epigenetic changes, topological cues and correct protein-protein interactions need to
De Castro, IJ, Gokhan, E, Vagnarelli, P
core   +1 more source

Chromosomal localization of PHOX2B during M‐phase is disrupted in disease‐associated mutants

Development, Growth &Differentiation, EarlyView.
Some transcription factors exhibit chromosomal localization during M‐phase and play an important role in the rapid re‐activation of target genes in early G1‐phase. In this study, we assessed the chromosomal localization of Paired‐like homeodomain 2B (PHOX2B) and its disease‐associated mutants, and found that disease‐associated PHOX2B mutants exhibited ...
Yuki Sato, Shinichi Hayashi, Souichi Oe, Taro Koike, Yousuke Nakano, Ryohei Seki‐Omura, Hikaru Iwashita, Yukie Hirahara, Masaaki Kitada   +8 more
wiley   +1 more source

Mutation activity of Lonicera caerulea population in an active fault zone (the Altai Mountains) [PDF]

arXiv, 2015
Geophysical and geochemical anomalies may have a mutagenic effect on plants growing in active fault zones being the factors of evolutionary transformation of plant populations. To test this assumption we evaluated the mutation activity of a Lonicera caerulea natural population in one of the active fault zones in the Altai Mountains.
arxiv  

Chromosome condensation in mitosis and meiosis of rye (Secale cereale L.) [PDF]

, 2004
Structural investigation and morphometry of meiotic chromosomes by scanning electron microscopy (in comparison to light microscopy) of all stages of condensation of meiosis I + II show remarkable differences during chromosome condensation in mitosis and ...
Herrmann, Reinhold G., Wanner, Gerhard, Zoller, J. F.   +2 more
core   +1 more source

Transcriptional response in larvae of the generalist fruit fly Anastrepha obliqua feeding on three different tropical host plants

Entomologia Experimentalis et Applicata, EarlyView.
We investigated the molecular basis of host switching by the phytophagous West Indian fruit fly (A. obliqua). Third‐instar larvae showed differential gene expression according to host plants: red mombin, mango, and carambola. The main gene categories differentially expressed were digestion, detoxification, and gene regulators.
Sandra M. Velasco‐Cuervo, César A. Lemos‐Lucumi, Maria R. Manzano, Stephen E. Strelkov, Nelson Toro‐Perea, Leonardo Galindo‐González   +5 more
wiley   +1 more source