List three phases of gametogenesis.

Explanation

**Step-by-Step Solution:**

1. **Understanding Gametogenesis**: Gametogenesis refers to the process of forming gametes (sperm and eggs) in organisms. It occurs differently in males and females.

2. **Identifying the Phases**: There are three main phases of gametogenesis:
- **Multiplication Phase**: This is the initial phase where diploid germ cells (spermatogonia in males and oogonia in females) undergo mitosis to increase their number.
- **Growth Phase**: In this phase, the primary gametes (primary spermatocytes in males and primary oocytes in females) undergo meiosis. This results in the formation of secondary gametes (secondary spermatocytes and secondary oocytes), which are haploid.
- **Maturation Phase**: The final phase involves the completion of meiosis, leading to the formation of mature gametes (spermatozoa in males and ova in females).
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