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Multiple Choice
Which of the following best describes what occurs during anaphase of mitosis?
A
Sister chromatids separate at the centromere and move toward opposite poles.
B
Chromatin condenses into visible chromosomes.
C
Chromosomes align at the metaphase plate.
D
The nuclear envelope reforms around each set of chromosomes.
Verified step by step guidance
1
Understand the context of the question: The problem is asking about the specific events that occur during anaphase, which is one of the stages of mitosis. Mitosis is the process of cell division that results in two identical daughter cells.
Recall the sequence of mitosis stages: Prophase, Metaphase, Anaphase, and Telophase. Each stage has distinct cellular events. Anaphase is the third stage, following metaphase.
Focus on the key event of anaphase: During anaphase, the sister chromatids (identical copies of a chromosome) are pulled apart at the centromere by spindle fibers. This separation ensures that each daughter cell will receive an identical set of chromosomes.
Compare the provided options: Evaluate each option based on your understanding of anaphase. For example, 'Chromatin condenses into visible chromosomes' occurs during prophase, not anaphase. 'Chromosomes align at the metaphase plate' happens during metaphase. 'The nuclear envelope reforms around each set of chromosomes' occurs during telophase.
Select the correct description: The correct answer is 'Sister chromatids separate at the centromere and move toward opposite poles,' as this accurately describes the primary event of anaphase in mitosis.