Multiple Choice
During which phase of mitosis do sister chromatids separate and move toward opposite poles of the cell?
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16. Cell Division
Mitosis
Multiple Choice
During anaphase of mitosis, what cellular structures separate and move toward opposite poles of the cell?
A
Homologous chromosome pairs separate and move to opposite poles
B
Chromosomes condense and become visible under a light microscope
C
The nuclear envelope reforms around two sets of chromosomes
D
Sister chromatids (now individual chromosomes) separate at their centromeres and move to opposite poles
Verified step by step guidance1
Recall the stages of mitosis: prophase, metaphase, anaphase, and telophase, each with distinct events involving chromosomes and cellular structures.
Understand that during anaphase, the key event is the separation of sister chromatids, which are identical copies of a chromosome connected at the centromere.
Identify the cellular structures responsible for moving chromatids: spindle fibers (microtubules) attach to the centromeres via kinetochores and pull sister chromatids apart.
Recognize that homologous chromosome pairs separate during meiosis I, not mitosis, so this does not occur in anaphase of mitosis.
Conclude that during anaphase of mitosis, sister chromatids separate at their centromeres and move toward opposite poles of the cell, driven by the spindle apparatus.
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