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Multiple Choice
During which phase of mitosis do the chromosomes begin to unwind and the nuclear envelope re-forms?
A
Telophase
B
Metaphase
C
Anaphase
D
Prophase
Verified step by step guidance
1
Understand the stages of mitosis: Mitosis is divided into four main phases: Prophase, Metaphase, Anaphase, and Telophase.
Recall the key events in each phase: In Prophase, chromosomes condense and the nuclear envelope breaks down. In Metaphase, chromosomes align at the cell's equator. In Anaphase, sister chromatids separate and move to opposite poles. In Telophase, chromosomes begin to unwind and the nuclear envelope re-forms.
Identify the phase where chromosomes unwind: During Telophase, the chromosomes start to de-condense back into chromatin, and the nuclear envelope re-forms around each set of chromosomes.
Consider the role of the nuclear envelope: The reformation of the nuclear envelope is crucial for the completion of cell division, as it encloses the separated chromosomes into two distinct nuclei.
Conclude with the correct phase: Based on the events described, the phase of mitosis where chromosomes begin to unwind and the nuclear envelope re-forms is Telophase.