During cytokinesis in an animal cell, a constricting ring pinches the dividing cell into the two daughter cells. This contractile ring is formed by which of the following structures?
a. Centrioles
b. Microtubules
c. Microfilaments
d. Z discs
e. The spindle apparatus
Answere : a. Centrioles
The contractile ring that leads to cytokinesis in animal cells has been shown to be made primarily of. microfilaments.
Cytokinesis in animal cells is often referred to as cleavage. During cleavage a structure called the contractile ring forms. The contractile ring is composed of actin microfilaments that are involved in contraction of the cleavage furrow, eventually producing two separate cells.
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