Telophase: Final Stage of Mitosis

Steps:

• Recall mitosis phases: prophase (condensation), metaphase (alignment), anaphase (separation), telophase (reformation).
• In telophase, chromosomes arrive at poles and begin decondensing as nuclear envelopes reform.
• Evaluate options against telophase events: uncoiling occurs inside reforming nuclei.
• Eliminate mismatches from earlier phases.

Why B is correct:

• Telophase involves chromosome decondensation (uncoiling) within the newly forming nucleus, per the standard mitotic cycle definition.

Why the others are wrong:

• A: Attachment to spindle fibers at equator happens in metaphase.
• C: Movement to poles occurs in anaphase.
• D: Condensation into compact structures happens in prophase, inside the nucleus, not cytoplasm.

Final answer: B