What type of cell division occurs during gametogenesis of the diploid parent?

Explanation

**Step-by-Step Solution:**

1. **Understanding Gametogenesis**: Gametogenesis is the process of forming gametes (sperm and egg cells) in organisms. This process occurs in diploid organisms, which have two sets of chromosomes.

2. **Identifying the Type of Cell Division**: In diploid organisms, the formation of gametes requires a specific type of cell division. The options are mitosis and meiosis.

3. **Recognizing the Need for Reduction Division**: Since gametes are haploid (having one set of chromosomes), the diploid parent must undergo a reduction division to halve the chromosome number. This is crucial for maintaining the chromosome number across generations when fertilization occurs.

...