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Multiple Choice
Which of the following sentences describes something that happens during prophase?
A
The chromatin condenses into visible chromosomes.
B
The nuclear envelope reforms around each set of chromosomes.
C
Sister chromatids are pulled apart to opposite poles of the cell.
D
The cell membrane pinches in to form two daughter cells.
Verified step by step guidance
1
Understand the context of the question: The problem is asking about events that occur during prophase, which is a stage of mitosis. Mitosis is the process of cell division that results in two identical daughter cells.
Recall the key events of prophase: During prophase, the chromatin (uncondensed DNA) condenses into visible chromosomes. This is a hallmark of prophase and is essential for the chromosomes to be properly segregated later in mitosis.
Eliminate incorrect options: Review the other options provided. The nuclear envelope reforms around each set of chromosomes during telophase, not prophase. Sister chromatids are pulled apart during anaphase, and the cell membrane pinches in during cytokinesis.
Focus on the correct description: The condensation of chromatin into visible chromosomes is specific to prophase and is a preparatory step for the alignment and separation of chromosomes in later stages of mitosis.
Conclude the reasoning: Based on the information above, the correct description of prophase is 'The chromatin condenses into visible chromosomes.' This aligns with the biological processes occurring during this stage of mitosis.