clytia hemisphaerica wave from cytokinesis Watch Video
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Description: The first division of the fertilised egg (avi version : 540 Ko). Division in unipolar, starting from the animal pole and cutting down to the vegetal pole. Unipolar divisions occur in the early embryo because nuclei and spindles are confined to a thin peripheral layer of cytoplasm, and so stimulate cytokinesis locally rather than in a ring.
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