Dictionary > Discoidal cleavage

Discoidal cleavage

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


You will also like...

green leaf - close up view
Leaves

Leaves are the major photosynthetic organ of a plant. Apart from that, they are also crucial to water movement. In this ..

genes controlling growth and development
Control of Growth & Development

Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..

Early Earth
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..

Young plant growing from the soil.
Soils

Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..

Peppered moth ("Biston betularia") melanic and light form
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
Consciousness and Behavior

Human consciousness and behavior are an interesting topic since they are determined and controlled by the brain. Conscio..

Related Articles...

No related articles found

See all Related Topics