Oogonia development in teleosts fish varies according to the group, and the determination of oogenesis dynamics allows the understanding of maturation and fertilisation processes.
32.
Egg development is mostly completed by the insect s adult stage and is controlled by hormones that control the initial stages of oogenesis and yolk deposition.
33.
Over a regular interval, in response to hormonal signals, a process of oogenesis matures one ovum which is released and sent down the Fallopian tube.
34.
Reproductive effects reported are primarily due to a chemical inhibition of vitellogenesis and oogenesis, which are highly conserved processes for oviparous ( egg-laying ) animals.
35.
Digyny is most commonly caused by either failure of one meiotic division during oogenesis leading to a diploid oocyte or failure to extrude one polar body from the oocyte.
36.
These OSCs allow for the production of new female reproductive cells ( oocytes ) through the process of oogenesis, during the organism's reproductive life-cycle.
37.
In mammals, the first part of oogenesis starts in the germinal epithelium, which gives rise to the development of ovarian follicles, the functional unit of the ovary.
38.
In colonies of " Bombus terrestris ", the queen can control oogenesis and worker egg laying by regulating concentrations of juvenile hormone ( JH ) in workers.
39.
In the fruitfly " Drosophila ", ortholog dp53 are required for much of the cell death observed in early oogenesis when oocyte selection and meiotic recombination occur.
40.
Furthermore, the Dufour's gland of the parasitic " Vespula austriaca " wasp releases substances that prevent oogenesis in workers to suppress reproduction in host workers.