Multiple Choice
In which stage of mitosis do the chromatids get separated and move toward opposite ends of the cell?
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11. Cell Division
Phases of Mitosis
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What happens to sister chromatids during anaphase?
A
They are replicated to form identical copies.
B
They condense and become visible under a microscope.
C
They align at the cell's equatorial plane.
D
They are pulled apart to opposite poles of the cell.
Verified step by step guidance1
Understand the context of the cell cycle: Anaphase is a stage in mitosis, which is part of the cell cycle where replicated chromosomes are separated into two new nuclei.
Recall the structure of a chromosome: Each chromosome consists of two sister chromatids, which are identical copies formed during DNA replication in the S phase of the cell cycle.
Identify the key event of anaphase: During anaphase, the sister chromatids are separated. This is facilitated by the shortening of spindle fibers attached to the centromeres of the chromatids.
Visualize the movement: As the spindle fibers shorten, they pull the sister chromatids apart, moving them toward opposite poles of the cell.
Recognize the outcome: The separation of sister chromatids ensures that each new daughter cell will receive an identical set of chromosomes, crucial for maintaining genetic consistency.
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