객관식
In which phase of mitosis are condensed chromosomes lined up in the center of the cell?
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11. Cell Division
Phases of Mitosis
객관식
During anaphase of mitosis, which of the following events occurs?
A
The nuclear envelope re-forms around separated chromosomes.
B
The cell undergoes cytokinesis.
C
Chromosomes align at the metaphase plate.
D
Sister chromatids separate and move toward opposite poles.
검증된 단계별 안내1
Understand the context of the problem: The question is about the events that occur during anaphase, a specific phase of mitosis.
Recall the stages of mitosis: Mitosis consists of prophase, metaphase, anaphase, and telophase. Each stage has distinct events.
Focus on anaphase: During anaphase, the key event is the separation of sister chromatids. This is facilitated by the shortening of microtubules attached to the kinetochores.
Differentiate from other phases: In metaphase, chromosomes align at the metaphase plate. In telophase, the nuclear envelope re-forms. Cytokinesis, the division of the cytoplasm, typically occurs after mitosis.
Conclude with the correct event: In anaphase, sister chromatids are pulled apart and move toward opposite poles of the cell, ensuring each new cell will receive an identical set of chromosomes.
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