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Multiple Choice
During which phase of mitosis does the nuclear membrane dissolve?
A
Metaphase
B
Anaphase
C
Telophase
D
Prophase
Verified step by step guidance
1
Understand the stages of mitosis: Mitosis is divided into several phases: prophase, metaphase, anaphase, and telophase. Each phase has distinct events that occur within the cell.
Focus on prophase: During prophase, the chromatin condenses into visible chromosomes, and the mitotic spindle begins to form. This is the first stage of mitosis.
Identify the key event in prophase: One of the critical events in prophase is the breakdown of the nuclear membrane, which allows the spindle fibers to interact with the chromosomes.
Compare with other phases: In metaphase, chromosomes align at the cell's equatorial plate. In anaphase, sister chromatids are pulled apart. In telophase, the nuclear membrane reforms around the separated sets of chromosomes.
Conclude that the nuclear membrane dissolves during prophase, which is the initial phase of mitosis where the nuclear envelope breaks down to facilitate chromosome movement.