Which of the following does not occur during mitosis?
Correct answer: D. Separation of the spindle poles
- A. Condensation of the chromosomes
- B. Replication of the DNA
- C. Separation of sister chromatids
- D. Separation of the spindle poles
Explanation
In mitosis, the separation of spindle poles is a critical event that ensures proper chromosome segregation during cell division. During prophase, microtubules organize into a bipolar spindle apparatus with spindle poles at opposite ends of the cell. As mitosis progresses into metaphase, the spindle fibers attach to the kinetochores of chromosomes, aligning them at the metaphase plate. While the spindle poles themselves do not physically separate during mitosis, they provide the structural framework for the proper alignment and segregation of chromosomes. This organization ensures that each daughter cell receives the correct complement of chromosomes during cell division, maintaining genomic integrity.
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