Question

______ is the phase of the cell cycle in which the cytoplasm splits apart, and the cell pinches in two.

Explanation:

The cell cycle phase where the cytoplasm splits and the cell pinches into two is cytokinesis. In the cell cycle, after mitosis (nuclear division), cytokinesis occurs to divide the cytoplasm and organelles between the two new daughter cells. For animal cells, a cleavage furrow forms to pinch the cell, while plant cells form a cell plate.

Answer:

Cytokinesis