Blastodisc


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Related to Blastodisc: blastoderm

Blastodisc

 

embryonic disc, an aggregate of cytoplasm in the holozoic part of the ovum in animals with discoid cleavage. The blastodisc contains a nucleus and is free from the yolk. In the process of cleavage the blastodisc is transformed into a layer of cells (blastoderm) located on the surface of the nondividing yolk.

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