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Multiple Choice
Which of the following accurately describes what occurs during anaphase?
A
The nuclear envelope re-forms around separated chromosomes.
B
Chromatin condenses into visible chromosomes.
C
Chromosomes align at the cell's equatorial plane.
D
Sister chromatids are pulled apart to opposite poles of the cell.
Verified step by step guidance
1
Understand the context of the problem: The question is about the phase of mitosis known as anaphase.
Recall the stages of mitosis: prophase, metaphase, anaphase, and telophase, and what occurs in each stage.
During anaphase, the key event is the separation of sister chromatids. This is facilitated by the shortening of microtubules attached to the kinetochores.
The separated sister chromatids are pulled toward opposite poles of the cell, ensuring that each new daughter cell will receive an identical set of chromosomes.
Recognize that the other options describe events in different phases of mitosis: nuclear envelope reformation occurs in telophase, chromatin condensation occurs in prophase, and chromosome alignment occurs in metaphase.