Figure 8.26. Spiral cleavage of the mollusc Trochus viewed (A) from the animal pole and (B) from one side.

Figure 8.26

Spiral cleavage of the mollusc Trochus viewed (A) from the animal pole and (B) from one side. In (B), the cells derived from the A blastomere are shown in color. The mitotic spindles, sketched in the early stages, divide the cells unequally and at an angle to the vertical and horizontal axes.

From: The Early Development of Snails

Cover of Developmental Biology
Developmental Biology. 6th edition.
Gilbert SF.
Sunderland (MA): Sinauer Associates; 2000.
Copyright © 2000, Sinauer Associates.

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