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Multiple Choice
During telophase of mitosis, which of the following events occurs?
A
Sister chromatids are pulled apart to opposite poles.
B
The cell's DNA is replicated.
C
Chromosomes align at the metaphase plate.
D
The nuclear envelope re-forms around each set of chromosomes.
Verified step by step guidance
1
Understand the context of the problem: Telophase is the final stage of mitosis, a process of cell division where a single cell divides into two identical daughter cells. Each stage of mitosis has specific events associated with it.
Recall the key events of telophase: During telophase, the chromosomes that were separated during anaphase reach the opposite poles of the cell. The nuclear envelope begins to re-form around each set of chromosomes, creating two distinct nuclei.
Eliminate incorrect options: Sister chromatids are pulled apart during anaphase, not telophase. DNA replication occurs during the S phase of interphase, not during mitosis. Chromosomes align at the metaphase plate during metaphase, not telophase.
Focus on the correct event: The nuclear envelope re-forms around each set of chromosomes during telophase, ensuring that each daughter cell will have its own nucleus containing the complete set of genetic material.
Summarize the process: Telophase is characterized by the reformation of the nuclear envelope, decondensation of chromosomes, and preparation for cytokinesis, which will divide the cytoplasm and complete the formation of two daughter cells.