Cytokinesis is slowed down by the large yolk amount but still occurs, this leads to an holoblastic cleavage. The cleavage plan is fixed, following a radial pattern. The resulting blastula is a multilayer of cells with eccentric blastocoele. Cells have different size because of yolk distribution, with animal pole cells smaller and more numerous than vegetal pole cells. The movement of pigment leads to change in pigmentation and formation of the gray crescent on the opposite side from sperm entry.
Cortical rotation promotes the rearrangement of inner cytoplasm.
The effect on later development will be discussed later.