Examlex
The fact that the structures of cells vary widely reflects the specializations needed for their different functions.
Cleavage
The division of cells in the early embryo following fertilization, leading to the formation of a multicellular organism.
Gastrulation
A phase early in embryonic development during which the single-layered blastula reorganizes into a multilayered structure, forming the embryonic germ layers.
Blastulation
An early stage in embryonic development that results in the formation of a blastula, a sphere of cells surrounding a fluid-filled cavity.
Gray Crescent
An area that appears on the surface of amphibian eggs following fertilization, indicating where the dorsal side of the embryo will develop.
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