Question

complex organisms quick check
in what phase of mitosis do chromosomes split into sister chromatids? (1 point)
prophase
cytokinesis
anaphase
telophase

Explanation:

In mitosis, during anaphase, the sister chromatids are pulled apart by the spindle fibers and move towards opposite poles of the cell. Prophase is when chromosomes condense and the nuclear envelope breaks down. Cytokinesis is the division of the cytoplasm (not part of mitosis phases in the strict sense for this question). Telophase is when new nuclear envelopes form around the separated chromosomes.

Answer:

anaphase