What is the role of microfilaments in cell division?

a. they separate the sister chromatids.
b. they replicate the dna during s phase.
c. they push the cell into anaphase.
d. they split the cell during cytokinesis.

The right answer is D.

Cytokinesis is final step of cell division, it is the separation of one cell into two. In animal cells a dividing groove separates the cell in two, under the action of an intracellular contractile ring formed of actin microfilaments that are associated with myosin molecules. Actin and myosin are two of the molecules responsible for muscle contraction. The contractile ring is formed by the contraction of myosin and actin. It is this contraction that will decrease the size of the ring and thus cause the separation of the cell into two cells.

answer: a. a gene that causes a specific trait.