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Multiple Choice
During metaphase of mitosis, what happens to the chromosomes?
A
Chromosomes are pulled apart to opposite poles.
B
Chromosomes condense and become visible.
C
Chromosomes align at the cell's equatorial plane.
D
Chromosomes are replicated.
Verified step by step guidance
1
Understand the stages of mitosis: Mitosis is divided into several phases, including prophase, metaphase, anaphase, and telophase. Each phase has distinct characteristics and roles in cell division.
Focus on metaphase: During metaphase, chromosomes are not pulled apart or replicated. Instead, they align at the cell's equatorial plane, which is the central region of the cell.
Visualize chromosome alignment: Chromosomes, which have already condensed and become visible during prophase, line up along the metaphase plate, an imaginary line equidistant from the two spindle poles.
Role of spindle fibers: Spindle fibers attach to the centromeres of the chromosomes, ensuring that each sister chromatid is connected to opposite poles of the cell. This alignment is crucial for the equal distribution of genetic material.
Prepare for anaphase: Once chromosomes are properly aligned, the cell is ready to proceed to anaphase, where the sister chromatids are pulled apart to opposite poles, ensuring each new cell will receive an identical set of chromosomes.