Meiosis is a process that occurs ina female's ovaries. During oogenesis, or the development of mature female gametes or eggs, primary oocytes go through meiosis. What does not occur in meiosis? The events that occur in meiosis but not mitosis includehomologous chromosomes pairing up, crossing ov...
Our results reveal the molecular mechanisms that control the two-step release of cohesion during oogenesis. Results AIR-2 phosphorylates REC-8 during late meiotic prophase Analysis of REC-8 amino acid sequence reveals the presence of 10 weak consensus sequences for Aurora B substrate (R/KXS/T)...
During oogenesis in mammals, the meiosis is inhibited in the oocyte at the prophase I of the meiotic division due to the high cAMP level. This level is maintained by the activity of C-type natriuretic peptide (CNP, NPPC) produced by granulosa cells. The CNP binds to the NPR2 receptor in...
J. Post-transcriptional control of gene expression during mouse oogenesis. Results Probl. Cell Differ. 55, 1–21 (2012). Article CAS PubMed Google Scholar Conti, M. & Franciosi, F. Acquisition of oocyte competence to develop as an embryo: integrated nuclear and cytoplasmic events. Hum. ...
We used immunohistochemistry methods, Western blots, and a specific caspase-6 inhibitor to determine the presence of lamin A/C and caspase-6 during oogenesis and in isolated oocytes. Our results demonstrated that these proteins were always present and that their distributions were related to oocyte ...
Two Xenopus Proteins That Bind the 3′ End of Histone mRNA: Implications for Translational Control of Histone Synthesis during Oogenesis Translationally inactive histone mRNA is stored in frog oocytes, and translation is activated at oocyte maturation. The replication-dependent histone mRNAs... ZF Wang...
[2]. In particular, in marine teleosts spawning buoyant eggs in seawater, oocytes undergo a significant increase in size because of rapid water uptake during meiosis resumption [3–5]. During these processes, the oocytes become buoyant, which is essential for their oceanic survival and dispersal ...
MeiosisOogenesisXenopus laevisThe results presented here show that a decrease in the concentration of total polyamines, due to a decrease in putrescine and spermine, occurs during oogenesis in Xenopus laevis. The microinjection of spermine or spermidine decreases the hormonal responsiveness (maturation) ...
Our study suggests DRP1 is a CENP-F-dependent, atypical MCC member that mediates metaphase-to-anaphase transition by driving APC/C activity in mouse oocyte meiosis. These findings extend the role of DRP1 as a cell cycle regulator functions during oocyte meiosis maturation. Results CENP-F ...
The meiotic situation and meiotic chromosome configurations at prophase and MI during oogenesis should be studied in hybrid Phodopus females. The check- point systems in meiotic cells are considered to be more stringent during spermatogenesis than oogenesis, and their control mechan- isms likely differ...