Discoidal Cleavage


Also found in: Medical.

discoidal cleavage

[dis′kȯid·əl ′klē·vij]
(embryology)
A type of cleavage producing a disc of cells at the animal pole.

Discoidal Cleavage

 

a type of egg cleavage in animals with telolecithal eggs (scorpions, cephalopod mollusks, cartilaginous and bony fish, reptiles, and birds). In discoidal cleavage, only a small disk of nucleus-containing cytoplasm divides, and this disk is relatively free of the yolk.