The fusion of male and female gametes is termed as __________.

Explanation

**Step-by-Step Solution:**

1. **Understanding Gametes**: Begin by recognizing that male and female gametes are the reproductive cells involved in sexual reproduction. The male gamete is typically referred to as sperm, while the female gamete is known as the ovum (egg).

2. **Process of Fusion**: The fusion of these two gametes is a crucial step in reproduction. When the sperm (male gamete) successfully merges with the ovum (female gamete), they combine their genetic material.

3. **Formation of Zygote**: This fusion results in the formation of a zygote, which is a single cell that eventually develops into a new organism. The zygote is diploid, meaning it contains two sets of chromosomes, one from each parent.

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