Which phase is the fourth stage of mitosis, where chromosomes begin to spread into chromatin and the nuclear envelope re-forms?

Which phase is the fourth stage of mitosis, where chromosomes begin to spread into chromatin and the nuclear envelope re-forms?

• A. Telophase
• B. Cytokinesis
• C. Interphase
• D. Metaphase

Answer: (A)

Telophase is the stage where the cell completes mitosis by re-establishing two separate nuclei and returning the chromosomes to chromatin. After the chromosomes have been pulled to opposite poles, they begin to unwind from their condensed forms and spread out as less-visible chromatin. The nuclear envelope re-forms around each set of chromosomes, creating two distinct nuclei within the same cell, and the nucleolus becomes visible again inside each new nucleus. The spindle apparatus disassembles as this clean separation of genetic material is finalized, and cytokinesis often overlaps, splitting the cytoplasm to yield two daughter cells.

Telophase is the stage where the cell completes mitosis by re-establishing two separate nuclei and returning the chromosomes to chromatin. After the chromosomes have been pulled to opposite poles, they begin to unwind from their condensed forms and spread out as less-visible chromatin. The nuclear envelope re-forms around each set of chromosomes, creating two distinct nuclei within the same cell, and the nucleolus becomes visible again inside each new nucleus. The spindle apparatus disassembles as this clean separation of genetic material is finalized, and cytokinesis often overlaps, splitting the cytoplasm to yield two daughter cells.