Multiple Choice
During which phase of mitosis do the chromosomes begin to unwind and the nuclear envelope re-forms?
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3. Energy & Cell Processes
Phases of Mitosis
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During which phase of mitosis do the chromosomes line up along the center of the cell?
A
Prophase
B
Metaphase
C
Telophase
D
Anaphase
Verified step by step guidance1
Understand the stages of mitosis: Mitosis is divided into several phases: prophase, metaphase, anaphase, and telophase.
Identify the key events in each phase: In prophase, chromosomes condense and become visible. In metaphase, chromosomes line up at the cell's equatorial plane. In anaphase, sister chromatids are pulled apart. In telophase, the cell begins to divide into two.
Focus on metaphase: During metaphase, the chromosomes align along the metaphase plate, which is an imaginary line equidistant from the two centrosome poles.
Recognize the role of the spindle fibers: During metaphase, spindle fibers attach to the centromeres of the chromosomes, ensuring they are properly aligned for separation.
Conclude that the phase where chromosomes line up along the center of the cell is metaphase, as this is the defining characteristic of this stage.
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