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Multiple Choice
Prophase of mitosis is characterized by which of the following?
A
Chromosomes condense and become visible
B
Chromosomes align at the cell equator
C
Sister chromatids separate
D
Nuclear envelope re-forms
Verified step by step guidance
1
Begin by understanding the stages of mitosis: prophase, metaphase, anaphase, and telophase. Each stage has distinct characteristics.
Focus on prophase, the first stage of mitosis. During prophase, the chromatin condenses into visible chromosomes. This is a key characteristic of prophase.
In prophase, the nuclear envelope begins to break down, allowing the spindle fibers to interact with the chromosomes.
Contrast prophase with metaphase, where chromosomes align at the cell equator, and anaphase, where sister chromatids separate. These events do not occur during prophase.
Finally, note that the nuclear envelope re-forms during telophase, not prophase. This helps distinguish prophase from other stages of mitosis.