The fusion of male and female gametes in course of fertilization is called

Options

A. Syngamy
B. Hologamy
C. Isogamy
D. Anisogamy

Answer

To answer the question regarding the fusion of male and female gametes during fertilization, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Fertilization**: Fertilization is a key process in sexual reproduction where male and female gametes combine. The male gamete is the sperm, and the female gamete is the egg.

2. **Identifying Gametes**: In humans and many other organisms, the sperm is produced by the male and the egg is produced by the female. Both gametes are haploid, meaning they contain half the number of chromosomes compared to the diploid zygote that forms after fertilization.

3. **Defining the Process**: The fusion of these two haploid gametes results in the formation of a diploid zygote. This zygote contains genetic material from both parents, contributing to genetic variation in the offspring.

4. **Understanding Terminology**:
- **Syngamy**: This term specifically refers to the fusion of male and female gametes during fertilization.
- **Hologamy**: This involves the fusion of entire organisms, not just gametes, and is seen in some fungi and algae.
- **Isogamy**: This refers to the fusion of gametes that are of the same type, size, or shape.
- **Anisogamy**: This involves the fusion of gametes that are different in size or morphology, such as sperm and egg.

5. **Conclusion**: Based on the definitions and understanding of the terms, the correct answer to the question is **syngamy**, as it specifically describes the fusion of male and female gametes during fertilization.

### Final Answer:
The fusion of male and female gametes in the course of fertilization is called **syngamy**.

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