How many eggs and sperms are required to produce fraternal twins ?

Options

A. One egg, one sperm
B. One egg, two sperm
C. Two eggs, one sperm
D. Two eggs, two sperms

Answer

To determine how many eggs and sperms are required to produce fraternal twins, we can follow these steps:

1. **Understand the Concept of Fraternal Twins**: Fraternal twins, also known as dizygotic twins, occur when two separate eggs are fertilized by two separate sperm cells. This means that each twin develops from its own zygote.

2. **Identify the Requirements for Fertilization**: Since fraternal twins come from two different eggs, we need two eggs. Each of these eggs must be fertilized by a sperm cell. Therefore, we also need two sperm cells.

3. **Summarize the Findings**: To produce fraternal twins, the requirement is:
- **Number of Eggs**: 2
- **Number of Sperm**: 2

4. **Conclusion**: Thus, to produce fraternal twins, you need a total of **two eggs and two sperm cells**.

### Final Answer:
To produce fraternal twins, **2 eggs and 2 sperms** are required.

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