Which of the following are stages in the cytokinesis of animal cells? Select all that apply. A contractile ring of microfilaments and motor proteins forms under the plasma membrane during anaphase. The contractile ring reaches its smallest diameter, and the spindle microtubules are cut as vesicles form the new membranes that separate the two new cells. After telophase, the contractile ring constricts the plasma membrane and forms a cleavage furrow. The cell plate expands along the plane of division, and when the platefuses with the plasma membrane, the cytoplasm is partitioned into two new cells. During plant cell cytokinesis, a network of parallel microtubules condenses around the select answer This becomes a site of expansion of the Select answer which fuses with the plasma membrane and partitions the cytoplasm into two cells.