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Multiple Choice
Which of the following statements is true regarding the phases of mitosis?
A
Chromosomes are aligned at the metaphase plate during metaphase.
B
The nuclear envelope breaks down during anaphase.
C
Chromosomes are duplicated during prophase.
D
Sister chromatids separate during telophase.
Verified step by step guidance
1
Understand the phases of mitosis: Mitosis is divided into several phases: prophase, metaphase, anaphase, and telophase. Each phase has distinct events that occur in the cell.
Review the events of metaphase: During metaphase, chromosomes align at the metaphase plate, which is an imaginary plane equidistant from the two spindle poles.
Examine the events of anaphase: In anaphase, the sister chromatids are pulled apart by the spindle fibers and move toward opposite poles of the cell.
Clarify the events of prophase: During prophase, the chromatin condenses into visible chromosomes, and the nuclear envelope begins to break down, but chromosomes are not duplicated in this phase.
Understand telophase: In telophase, the sister chromatids reach the opposite poles, and the nuclear envelope re-forms around each set of chromosomes, but the separation of sister chromatids occurs in anaphase, not telophase.