During which stage of mitosis does cytokinesis usually occur in animals?

The correct answer is D. Telophase.

• Prophase is the first stage of mitosis. During prophase, the nuclear envelope breaks down, the chromosomes condense, and the spindle fibers form.
• Metaphase is the second stage of mitosis. During metaphase, the chromosomes line up at the center of the cell.
• Anaphase is the third stage of mitosis. During anaphase, the sister chromatids are separated and pulled to opposite poles of the cell.
• Telophase is the fourth and final stage of mitosis. During telophase, the nuclear envelope reforms, the chromosomes decondense, and the spindle fibers disappear.

Cytokinesis is the division of the cytoplasm to form two daughter cells. In animal cells, cytokinesis occurs by cleavage furrowing. The cleavage furrow is a groove that forms in the middle of the cell and pinches the cell in two.

In conclusion, cytokinesis usually occurs in animals during telophase.