During one complete round of mitosis in a single cell, how many times does prophase occur?

• A. Twice
• B. Three times
• C. Once
• D. Prophase does not occur in mitosis

Answer: (C)

Verified step by step guidance

1. Recall the stages of mitosis: prophase, metaphase, anaphase, and telophase, which occur sequentially in one complete round of mitosis.
2. Understand that prophase is the first stage of mitosis, where chromatin condenses into visible chromosomes and the mitotic spindle begins to form.
3. Recognize that during a single mitotic division, the cell passes through prophase only once as it prepares to separate its duplicated chromosomes.
4. Note that unlike meiosis, which has two rounds of division and thus two prophase stages, mitosis involves only one round and therefore one prophase.
5. Conclude that the number of times prophase occurs in one complete round of mitosis is once.