Results 31 to 40 of about 158,686 (345)

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

The DcPS1 cooperates with OSDLa during pollen development and 2n gamete production in carnation meiosis

open access: yesBMC Plant Biology, 2022
Background Deciphering the mechanisms of meiosis has important implications for potential applications in plant breeding programmes and species evolution.
Xuhong Zhou, Shuying Li, Xiaomi Yang
doaj   +1 more source

The Cyclin B2/CDK1 Complex Conservatively Inhibits Separase Activity in Oocyte Meiosis II

open access: yesFrontiers in Cell and Developmental Biology, 2021
Recently, we have reported that the cyclin B2/CDK1 complex regulates homologous chromosome segregation through inhibiting separase activity in oocyte meiosis I, which further elucidates the compensation of cyclin B2 on cyclin B1’s function in meiosis I ...
Jian Li   +7 more
doaj   +1 more source

The Hop2-Mnd1 Complex and Its Regulation of Homologous Recombination

open access: yesBiomolecules, 2023
Homologous recombination (HR) is essential for meiosis in most sexually reproducing organisms, where it is induced upon entry into meiotic prophase. Meiotic HR is conducted by the collaborative effort of proteins responsible for DNA double-strand break ...
Hideo Tsubouchi
doaj   +1 more source

Regulation of the G2/M Transition in Rodent Oocytes [PDF]

open access: yes, 2010
Regulation of maturation in meiotically competent mammalian oocytes is a complex process involving the carefully coordinated exchange of signals between the somatic and germ cell compartments of the ovarian follicle via paracrine and cell–cell coupling ...
Downs, Stephen
core   +2 more sources

Meiosis I chromosome segregation is established through regulation of microtubule–kinetochore interactions

open access: yeseLife, 2012
During meiosis, a single round of DNA replication is followed by two consecutive rounds of nuclear divisions called meiosis I and meiosis II. In meiosis I, homologous chromosomes segregate, while sister chromatids remain together.
Matthew P Miller   +3 more
doaj   +1 more source

TDM1 Regulation Determines the Number of Meiotic Divisions. [PDF]

open access: yesPLoS Genetics, 2016
Cell cycle control must be modified at meiosis to allow two divisions to follow a single round of DNA replication, resulting in ploidy reduction. The mechanisms that ensure meiosis termination at the end of the second and not at the end of first division
Marta Cifuentes   +12 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

Apoptosis in mouse fetal and neonatal oocytes during meiotic prophase one [PDF]

open access: yes, 2007
Background The vast majority of oocytes formed in the fetal ovary do not survive beyond birth. Possible reasons for their loss include the elimination of non-viable genetic constitutions arising through meiosis, however, the ...
Ghafari , Fataneh   +2 more
core   +4 more sources

Spo13 prevents premature cohesin cleavage during meiosis [version 1; 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

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