Meiosisis another type of cell division, but cells produced during meiosis are different from those produced during mitosis. Meiosis is used to produce male and female gametes, cells with half the normal number of chromosomes, which areonly used for sexual reproduction. A human body cell contains...
Thediagramsbelowshowapairofhomologouschromosomesattwodifferentstagesofmeiosis,...NamethepartslabelledP,QandRintheabovediagram.•P... ADVANCEDSUBSIDIARYGCEHUMANBIOLOGY-OCR http://.ocr.uk/images/63313-question-paper-unit-f222-01-growth-development-and-disease-test.pdf Youmayusealabelleddiagramtosupportyour...
Reduced fertility is a common problem associated with heat, and has been found to be caused by high temperatures during meiosis and fertilization in various species, e.g., Arabidopsis, tomato, rice, cowpea and barley (Bac-Molenaar et al. 2015; Giorno et al. 2013; Jagadish et al. 2014; ...
Sex differentiation in castor flowers occurs by growth arrest of opposite sex organs at stage 6 during organogenesis before meiosis. Stamens can develop at a later stage after initial inhibition as seen in reversion to bisexuality in female flowers, but not pistil. After inhibition, pistil ...
CCNA2 has different roles in mitosis and meiosis in female animals as CCNA2 and CDK coordinate mitosis and promote oocytes to enter meiosis, regulating the transition of meiosis I to meiosis II56. The GO enrichment analysis revealed several significantly enriched biological processes, molecular ...
Interestingly, expression of several germ cell markers was increased (Table 2). E2F6, which associates with polycomb group complexes, plays an important role in repressing meiosis-specific genes, including Tuba3a and Smc1β [41, 42]. These E2F6 target genes are also mis-expressed in Smad4 ...
Oocyte meiosis 1.32 × 10−8 5.962686567 1.4 × 10−5 Systemic lupus erythematosus 5.45 × 10−6 5.183660644 0.00580449 Progesterone-mediated oocyte maturation 1.08 × 10−5 5.34784899 0.011501479 c-Myc DNA replication 7.02 × 10−15 10.63095238 8.34 × 10−12 Cell cycle 4.50 × 10−...
Finally, gonads undergo proliferation and meiosis to produce mature oocyte or spermatozoa [17]. Many genes are involved in this process, and disruption of the complex mechanisms regulating oogenesis/spermatogenesis may cause infertility. Mollusca, including bivalves, gastropods, cephalopods, composes the...
In zebrafish ovarian cells, miR-210 has been shown to promote immune responses and inhibit genes related to oocyte meiosis through simulation experi- ments, indicating its key role in coordinating transcrip- tomic changes in fish ovaries [111], but there is limited research on this topic in ...
The ovary is a central organ in the reproductive system that produces oocytes and synthesizes and secretes steroid hormones. Healthy development and regular cyclical change in the ovary is crucial for regulating reproductive processes. However, the key g