During which phase of mitotic cell division do sister chromatids synchronously separate and move toward opposite spindle poles?
Answer and explanation
Correct answer: A. Anaphase
During anaphase, the enzyme separase cleaves the cohesin protein complexes holding sister chromatids together, allowing kinetochore microtubules to pull the separated sister chromatids (now individual chromosomes) toward opposite poles of the spindle. Chromosomes condense in prophase, align on the equatorial plate in metaphase, and decondense in telophase.
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