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Multiple Choice
Which of the following occurs during metaphase?
A
The nuclear envelope re-forms around each set of chromosomes.
B
Chromosomes align at the cell's equatorial plane.
C
Chromosomes condense and become visible.
D
Sister chromatids are pulled apart to opposite poles.
Verified step by step guidance
1
Understand the stages of mitosis: Mitosis is divided into several stages: prophase, metaphase, anaphase, and telophase. Each stage has distinct events that occur within the cell.
Identify the key event of metaphase: During metaphase, the chromosomes align at the cell's equatorial plane, also known as the metaphase plate. This alignment is crucial for the equal distribution of chromosomes to the daughter cells.
Differentiate between the stages: In prophase, chromosomes condense and become visible. In anaphase, sister chromatids are pulled apart to opposite poles. In telophase, the nuclear envelope re-forms around each set of chromosomes.
Focus on the alignment of chromosomes: The alignment of chromosomes at the equatorial plane ensures that each daughter cell will receive an identical set of chromosomes during cell division.
Review the role of the spindle apparatus: The spindle fibers attach to the centromeres of the chromosomes and help in their alignment during metaphase, preparing them for separation in the subsequent anaphase.