WebFeb 1, 2015 · The meroistic polytrophic ovary of D. melanogaster, with 16–20 ovarioles, has been the most influential model for understanding the interactions between stem cells … WebAug 6, 2012 · Oogenesis in Drosophila and in the beetle Tribolium follows two different modes of oogenesis (out of three to be found among insects), the polytrophic-meroistic (Drosophila) and telotrophic-meroistic (Tribolium) oogenesis [9, 10]. In polytrophic-meroistic ovaries each germ cell cluster matures as one unit encased by somatic follicle cells.
Absence of amplification of ribosomal DNA in the polytrophic …
WebApr 10, 2024 · However, its versatility has not been fully explored, particularly in insects that have the most derived, polytrophic meroistic ovaries. In this study, we successfully applied DIPA-CRISPR to the yellow fever mosquito Aedes aegypti, which has polytrophic meroistic ovaries. Following adult injection of Cas9 ribonucleoproteins ... WebThe present paper concerns the morphological features of ovaries in 33 species of bees with different social behavior patterns. The ovaries of bees were examined under light microscope. They are polytrophic-meroistic ovaries formed for an anterior germarium and a basal vitellarium. The germarium houses the how do you pronounce delphinium
Programmed cell death of the ovarian nurse cells during ... - PubMed
Weba Right and left ovaries dissected from a C. textor queen. b Scheme of the polytrophic meroistic ovary of C. textor, with repre-sentation of some ovarioles. c Ovarioles with nurse chamber and egg chamber at different stages of development (HE). Note the smaller, younger oocytes and the larger, more mature oocytes. d Ovarian fol- WebNov 11, 2024 · Conversely, in social Hymenoptera with meroistic polytrophic ovaries, ultrastructural studies indicate patency in the follicular epithelium 25, but immunocytochemistry of vitellogenin and VgR show ... WebClusters of mycetocytes (= cells filled with symbiotic organisms) are associated with lateral oviducts. Each ovary is composed of five loosely arranged ovarioles of the polytrophic … how do you pronounce derisive