Which phase marks the conclusion of mitosis with the reformation of the nuclear envelope and de-condensing chromosomes?

Which phase marks the conclusion of mitosis with the reformation of the nuclear envelope and de-condensing chromosomes?

• A. Prophase
• B. Metaphase
• C. Anaphase
• D. Telophase

Answer: (D)

Telophase is the stage that marks the end of mitosis. In this phase, the chromosomes have already been pulled to opposite poles and begin to de-condense back into thread-like strands. The nuclear envelope re-forms around each set of chromosomes, creating two separate nuclei inside the cell. The mitotic spindle disassembles as this reorganization completes. Cytokinesis usually follows, splitting the cytoplasm to produce two distinct daughter cells. This combination of re-forming nuclei and de-condensing chromosomes is why this phase signals the conclusion of mitosis.

Telophase is the stage that marks the end of mitosis. In this phase, the chromosomes have already been pulled to opposite poles and begin to de-condense back into thread-like strands. The nuclear envelope re-forms around each set of chromosomes, creating two separate nuclei inside the cell. The mitotic spindle disassembles as this reorganization completes. Cytokinesis usually follows, splitting the cytoplasm to produce two distinct daughter cells. This combination of re-forming nuclei and de-condensing chromosomes is why this phase signals the conclusion of mitosis.