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Multiple Choice
In mitosis, during which phase do the chromosomes line up along the equatorial plate of the cell?
A
Metaphase
B
Anaphase
C
Prophase
D
Telophase
Verified step by step guidance
1
Understand the process of mitosis: Mitosis is the division of a cell's nucleus into two genetically identical nuclei. It consists of several phases: prophase, metaphase, anaphase, and telophase.
Review the role of metaphase: During metaphase, chromosomes align along the equatorial plate (also called the metaphase plate) of the cell. This alignment ensures that each daughter cell will receive an identical set of chromosomes.
Compare metaphase with other phases: In prophase, chromosomes condense and the nuclear envelope breaks down. In anaphase, sister chromatids are pulled apart to opposite poles of the cell. In telophase, the nuclear envelope reforms around the separated chromatids.
Focus on the equatorial plate: The equatorial plate is the central region of the cell where chromosomes align during metaphase. This alignment is facilitated by spindle fibers attaching to the centromeres of the chromosomes.
Conclude that metaphase is the correct phase: Based on the description of the phases, the alignment of chromosomes along the equatorial plate occurs specifically during metaphase.