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Multiple Choice
During which phase of mitosis do sister chromatids separate and move toward opposite poles of the cell?
A
Anaphase
B
Telophase
C
Prophase
D
Metaphase
Verified step by step guidance
1
Understand the key phases of mitosis: Prophase, Metaphase, Anaphase, and Telophase. Each phase has distinct events that occur during cell division.
Recall that sister chromatids are identical copies of a chromosome connected by a centromere. During mitosis, these chromatids must separate to ensure each daughter cell receives an identical set of chromosomes.
Focus on Anaphase: This is the phase where the centromeres split, and the spindle fibers pull the sister chromatids apart, moving them toward opposite poles of the cell.
Eliminate the other options: In Prophase, chromosomes condense and spindle fibers form. In Metaphase, chromosomes align at the cell's equatorial plane. In Telophase, the separated chromatids reach the poles, and the nuclear envelope begins to reform.
Conclude that the correct phase where sister chromatids separate and move toward opposite poles is Anaphase.