Multiple Choice
How many cells are created from cytokinesis following mitosis?
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11. Cell Division
Cytokinesis
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How does cytokinesis occur in a dividing animal cell?
A
Through the formation of a cleavage furrow that pinches the cell into two
B
By the fusion of vesicles to form a new plasma membrane
C
By the formation of a cell plate that develops into a new cell wall
D
Through binary fission similar to prokaryotic cells
Verified step by step guidance1
Understand that cytokinesis is the process that divides the cytoplasm of a parental cell into two daughter cells.
In animal cells, cytokinesis occurs through the formation of a cleavage furrow. This is a contractile ring composed of actin and myosin filaments that forms just beneath the plasma membrane.
The contractile ring contracts, creating an indentation in the cell surface known as the cleavage furrow. This furrow deepens as the ring contracts further.
The continued contraction of the actin-myosin ring pinches the cell membrane inward, eventually splitting the cell into two separate daughter cells.
Note that this process is different from plant cells, where cytokinesis occurs through the formation of a cell plate, and from prokaryotic cells, which divide by binary fission.
