Question

during which phase of mitosis do spindle fibers shorten, pulling sister chromatids apart from one another and toward opposite ends of the cell?
○ cytokinesis
○ telophase
○ anaphase
○ metaphase
○ prophase

Explanation:

• Cytokinesis: This is the process of cell - division completion, not a mitosis phase.
• Telophase: Chromosomes arrive at poles, nuclear envelopes reform.
• Anaphase: Spindle fibers shorten, sister chromatids separate and move to opposite poles.
• Metaphase: Chromosomes align at the cell's equator.
• Prophase: Chromosomes condense, nuclear envelope breaks down.

Answer:

anaphase