Answer: Growth and repair of tissues.
- A Growth and repair of tissues
- B Formation of gametes
- C Introducing genetic variation
- D Halving the chromosome number
Correct answer: A. Growth and repair of tissues
Explanation: Mitosis produces genetically identical cells, providing for growth, repair and replacement of body tissues.
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.