Results 31 to 40 of about 98,483 (286)

The cyclin-A CYCA1;2/TAM is required for the meiosis I to meiosis II transition and cooperates with OSD1 for the prophase to first meiotic division transition. [PDF]

open access: yesPLoS Genetics, 2010
Meiosis halves the chromosome number because its two divisions follow a single round of DNA replication. This process involves two cell transitions, the transition from prophase to the first meiotic division (meiosis I) and the unique meiosis I to ...
Isabelle d'Erfurth   +9 more
doaj   +1 more source

Focus on Meiosis [PDF]

open access: yesReproduction, 2005
The past five years have seen the dawn of an era of illumination in our understanding of how vertebrate meiosis is regulated. Much of the foundation for recent progress came from the enormous advances in elucidating the molecular regulation of mitotic cell division and yeast meiosis (reviewed in Uhlmann 2001, Petronczki et al.
openaire   +2 more sources

Tackling Plant Meiosis: From Model Research to Crop Improvement

open access: yesFrontiers in Plant Science, 2018
Genetic engineering and traditional plant breeding, which harnesses the natural genetic variation that arises during meiosis, will have key roles to improve crop varieties and thus deliver Food Security in the future. Meiosis, a specialized cell division
Christophe Lambing, Stefan Heckmann
doaj   +1 more source

Ultrastructural analysis of chromatin in meiosis I plus II of rye (Secale cereale L.) [PDF]

open access: yes, 2004
Scanning electron microscopy (SEM) proves to be an appropriate technique for imaging chromatin organization in meiosis I and II of rye (Secale cereale) down to a resolution of a few nanometers.
Herrmann, Reinhold G.   +3 more
core   +1 more source

Cyclin A2 Is Required for Sister Chromatid Segregation, But Not Separase Control, in Mouse Oocyte Meiosis

open access: yesCell Reports, 2012
In meiosis, two specialized cell divisions allow the separation of paired chromosomes first, then of sister chromatids. Separase removes the cohesin complex holding sister chromatids together in a stepwise manner from chromosome arms in meiosis I, then ...
Sandra A. Touati   +10 more
doaj   +1 more source

MeiosisOnline: A Manually Curated Database for Tracking and Predicting Genes Associated With Meiosis

open access: yesFrontiers in Cell and Developmental Biology, 2021
Meiosis, an essential step in gametogenesis, is the key event in sexually reproducing organisms. Thousands of genes have been reported to be involved in meiosis. Therefore, a specialist database is much needed for scientists to know about the function of
Xiaohua Jiang   +8 more
doaj   +1 more source

Meiosis in Bougainvillea [PDF]

open access: yesNature, 1947
A query concerning the possibilities of crossing various horticultural varieties of Bougainvillea led me to examine meiosis in several of the more important ones available in Jamaica. Six varieties, Snow White, Formosa, Dark Purple, Ruby, Orange King and Royal Purple, were used.
openaire   +2 more sources

Spo13 prevents premature cohesin cleavage during meiosis [version 2; peer review: 2 approved, 1 approved with reservations]

open access: yesWellcome Open Research, 2019
Background: Meiosis produces gametes through two successive nuclear divisions, meiosis I and meiosis II. In contrast to mitosis and meiosis II, where sister chromatids are segregated, during meiosis I, homologous chromosomes are segregated. This requires
Stefan Galander   +3 more
doaj   +1 more source

To Make a Long Spindle Short: Nuclear Envelope Breakdown during Meiosis

open access: yesCell Reports, 2018
In fission yeast, the nuclear envelope (NE) remains intact during mitosis and meiosis I but is compromised during meiosis II. In this issue of Cell Reports, Flor-Parra et al.
Joseph M. Varberg, Sue L. Jaspersen
doaj   +1 more source

CDK-dependent nuclear localization of B-Cyclin Clb1 promotes FEAR activation during meiosis I in budding yeast [PDF]

open access: yes, 2013
Cyclin-dependent kinases (CDK) are master regulators of the cell cycle in eukaryotes. CDK activity is regulated by the presence, post-translational modification and spatial localization of its regulatory subunit cyclin.
Sarkar, S. (Sourav)   +19 more
core   +2 more sources

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