Question

during which phase of mitosis do the sister chromatids move apart?
telophase
metaphase
anaphase
prophase

Explanation:

To solve this, we recall the phases of mitosis:

• Prophase: Chromosomes condense, spindle forms.
• Metaphase: Chromosomes align at the equator.
• Anaphase: Sister chromatids separate and move to opposite poles (due to spindle fiber shortening).
• Telophase: Chromosomes decondense, nuclear envelopes reform.

So the phase where sister chromatids move apart is Anaphase.

Answer:

C. Anaphase (assuming the options are labeled A - D as: A. Telophase, B. Metaphase, C. Anaphase, D. Prophase)