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...
Leaves
Leaves are the major photosynthetic organ of a plant. Apart from that, they are also crucial to water movement. In this ..
Control of Growth & Development
Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..
The Origins of Life
This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..
Soils
Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..
Examples of Natural Selection
Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..
Consciousness and Behavior
Human consciousness and behavior are an interesting topic since they are determined and controlled by the brain. Conscio..