Results 1 to 10 of about 48,915 (171)
Accurate chromosome segregation by probabilistic self-organization [PDF]
BMC Biology 2015 13:65, 2014 Background: For faithful chromosome segregation during cell division, correct attachments must be established between sister chromosomes and microtubules from opposite spindle poles through kinetochores (chromosome bi-orientation). Incorrect attachments of kinetochore microtubules (kMTs) lead to chromosome mis-segregation and aneuploidy, which is often
arxiv +1 more source
TDM1 Regulation Determines the Number of Meiotic Divisions. [PDF]
PLoS 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
Mechanisms of Oocyte Maturation and Related Epigenetic Regulation
Frontiers in Cell and Developmental Biology, 2021 Meiosis is the basis of sexual reproduction. In female mammals, meiosis of oocytes starts before birth and sustains at the dictyate stage of meiotic prophase I before gonadotropins-induced ovulation happens. Once meiosis gets started, the oocytes undergo
Meina He +8 more
doaj +1 more source
Self-supervised Group Meiosis Contrastive Learning for EEG-Based Emotion Recognition [PDF]
arXiv, 2022 The progress of EEG-based emotion recognition has received widespread attention from the fields of human-machine interactions and cognitive science in recent years. However, how to recognize emotions with limited labels has become a new research and application bottleneck.
arxiv
Spatially explicit non-Mendelian diploid model [PDF]
Annals of Applied Probability 2009, Vol. 19, No. 5, 1880-1920, 2009 We introduce a spatially explicit model for the competition between type $a$ and type $b$ alleles. Each vertex of the $d$-dimensional integer lattice is occupied by a diploid individual, which is in one of three possible states or genotypes: $aa$, $ab$ or $bb$.
arxiv +1 more source
Actin cytoskeleton dynamics in mammalian oocyte meiosis†
Biology of Reproduction, 2018 During mitosis, cells undergo symmetrical cell division, while oocyte meiotic maturation undergoes two consecutive, asymmetric divisions that generate a totipotent haploid oocyte and two small polar bodies not involved in DNA replication.
Xing Duan, Shao‐Chen Sun
semanticscholar +1 more source
Wellcome 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
The Arabidopsis Cdk1/Cdk2 homolog CDKA;1 controls chromosome axis assembly during plant meiosis
EMBO Journal, 2019 Meiosis is key to sexual reproduction and genetic diversity. Here, we show that the Arabidopsis cyclin‐dependent kinase Cdk1/Cdk2 homolog CDKA;1 is an important regulator of meiosis needed for several aspects of meiosis such as chromosome synapsis.
C. Yang +14 more
semanticscholar +1 more source
Science Advances, 2019 The histone modification reader ZCWPW1 guides male meiosis prophase I. Meiosis is a specialized type of cell division that creates haploid germ cells and ensures their genetic diversity through homologous recombination.
Miao Li +17 more
semanticscholar +1 more source
Meiosis-specific cohesin component, Stag3 is essential for maintaining centromere chromatid cohesion, and required for DNA repair and synapsis between homologous chromosomes. [PDF]
PLoS Genetics, 2014 Cohesins are important for chromosome structure and chromosome segregation during mitosis and meiosis. Cohesins are composed of two structural maintenance of chromosomes (SMC1-SMC3) proteins that form a V-shaped heterodimer structure, which is bridged by
Jessica Hopkins +8 more
doaj +1 more source