Cytokinesis

Definition

noun

The division of the cytoplasm and the plasma membrane following the division of the nucleus resulting into two cells, each having its own nucleus and cytoplasm surrounded by a plasma membrane.


Supplement

This process begins during the late stage of mitosis (Telophase) and meiosis (Telophase II). In animal cells (and in some plant cells) it is marked by a constriction of the cell membrane called the cleavage furrow. In most plant cells it happens when an expanding cell plate forms across the center of the cytoplasm called the phragmoplast.


Word origin: Greek kyto-, comb. form of kýtos container, receptacle, body + Greek kīnēsis, movement.

Related forms: cytokinetic (adjective).

Compare: karyokinesis.
See also: mitosis.

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