Number the following steps in the correct order and tell which stage it occurs in:
a. A cleavage furrow or cell plate forms, separating the nuclei.
b. Chromosomes line up at the equator and chromatids are attached to spindle fibers.
c. Nuclear membrane and nucleolus reappear.
d. Genetic material replicates and is joined at the centromere.
e. Centromeres divide and single-stranded chromosomes move to the poles.