Answer: Nuclear division.
- A Cytoplasm division
- B Nuclear division
- C Chromosome condensation
- D Spindle formation
Correct answer: B. Nuclear division
Explanation: Karyokinesis = nuclear division (division of the nucleus). Cytokinesis = division of the cytoplasm.
The cell cycle: G1 (growth and preparation), S (DNA replication, chromosome number stays 2n but DNA content doubles), G2 (final checks before division), and M (mitosis itself) - together, G1+S+G2 make up interphase.
Concept context
Mitosis and meiosis: how cells divide for growth, repair, and reproduction.