Multiple Choice
During which stage of mitosis does the nuclear envelope break down?
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11. Cell Division
Phases of Mitosis
Multiple Choice
In what phase of mitosis do the chromosomes condense while the nucleus is still visible?
A
Anaphase
B
Metaphase
C
Telophase
D
Prophase
Verified step by step guidance1
Understand the stages of mitosis: Mitosis is divided into several phases: prophase, metaphase, anaphase, and telophase.
Identify the characteristics of each phase: In prophase, chromosomes condense and become visible under a microscope, and the nuclear envelope is still present but begins to break down.
Compare the phases: In metaphase, chromosomes align at the cell's equatorial plate, and in anaphase, sister chromatids are pulled apart. In telophase, the nuclear envelope re-forms around the separated chromosomes.
Focus on prophase: During prophase, the chromatin condenses into distinct chromosomes, and the mitotic spindle begins to form while the nucleus is still visible.
Conclude with the correct phase: Based on the characteristics, the phase where chromosomes condense while the nucleus is still visible is prophase.
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