Definition
noun
(embryology)A meroblastic cleavage wherein the cytoplasmic divisions are restricted to the animal pole, resulting in the formation of a disc of cells confined at the animal pole or on top of the yolk.
Supplement
This type of cleavage is characteristic of birds, fishes and reptiles in which their eggs contain a large amount of yolk that does not participate in cleavage.
See also: meroblastic cleavage, superficial cleavage
Dictionary > Discoidal cleavage
You will also like...
Control of Growth & Development
Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..
Stems
Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..
Plant Cell Defense
Plants protect themselves by releasing hydrogen peroxide to fight against fungal invasion. Another way is by secreting c..
Homeostasis of Organism Water Regulation
Osmoregulation is the regulation of water concentrations in the bloodstream, effectively controlling the amount of water..
Regulation of Biological Systems
Regulation of Biological Systems tutorials are focused on the modulation of biological systems from cell to population l..
Chemical Composition of the Body
The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial..