Animals produce gametes which fuse to form a _________

Explanation

**Step-by-Step Solution:**

1. **Understanding Gametes**: Animals produce two types of gametes: male gametes (sperm) and female gametes (egg cells). These gametes are crucial for sexual reproduction.

2. **Fertilization Process**: When these gametes come together, a process called fertilization occurs. This is where the male and female gametes fuse.

3. **Formation of Zygote**: The fusion of the sperm and egg results in the formation of a single cell called a zygote.

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