English
germinal disc
Sign in to saveAlso known as blastodisc
thumb|Embryo of Zebrafish undergoing cleavage The blastodisc, also called the germinal disc, is the embryo-forming part on the yolk of the egg of an animal that undergoes discoidal meroblastic cleavage. Discoidal cleavage occurs in those animals with a large proportion of yolk in their eggs, and include insects, fish, reptiles and birds. The blastodisc is a small disc of cytoplasm that sits on top of the yolk. In birds, it is a small, circular, white spot (approximately 1.5-3 mm across) on the surface of the yellow yolk of an egg, at the animal pole.
In the Vinony graph
Within Vinony's link graph, germinal disc is referenced by 16 other articles, and connects out to bird, fish and insect.
Vinony files it under Animal developmental biology and Oology.
Its subject is documented across 5 Wikipedia language editions.
Research
291 papers- Quantitative Protein Analysis of ZPB2, ZPB1 and ZPC in the Germinal Disc and a Non-Germinal Disc Region of the Inner Perivitelline Layer in Two Genetic Lines of Turkey Hens That Differ in Fertility.Animals : an open access journal from MDPI · 2022
- Localization of the fertilized germinal disc in the chicken egg before incubation.Poultry science · 2002
- The structure of the germinal disc region of the hen's ovarian follicle during the rapid growth phase.Journal of anatomy · 1978
- Fertilization 1: Sperm-Egg Interaction.Advances in experimental medicine and biology · 2017
- Germinal disc-derived epidermal growth factor: a paracrine factor to stimulate proliferation of granulosa cells.Biology of reproduction · 2001
via PubMed
~1 min read
Encyclopedic overview
1 sectionsContents
- References
thumb|Embryo of Zebrafish undergoing cleavage The blastodisc, also called the germinal disc, is the embryo-forming part on the yolk of the egg of an animal that undergoes discoidal meroblastic cleavage. Discoidal cleavage occurs in those animals with a large proportion of yolk in their eggs, and include insects, fish, reptiles and birds. The blastodisc is a small disc of cytoplasm that sits on top of the yolk. In birds, it is a small, circular, white spot (approximately 1.5-3 mm across) on the surface of the yellow yolk of an egg, at the animal pole.
==References== Early Development in Fish Early Development in Birds
Excerpted from Wikipedia’s “germinal disc” article, available under the CC BY-SA 4.0 licence.