Mule is an example of

Options

A. Interspecific hybridization, obtained by crossing male donkey and female horse
B. Interspecific hybridization, obtained by crossing female donkey and male horse
C. Out-crossing, obtaine by crossing male donkey and female horse
D. Cross breeding, obtained by crossing female donkey and male horse

Explanation

### Step-by-Step Solution

1. **Understanding the Question**: The question asks what type of hybridization the mule represents.

2. **Identifying Mule's Parentage**: A mule is produced by the mating of a male donkey (Equus asinus) and a female horse (Equus ferus caballus).

3. **Defining Interspecific Hybridization**: Interspecific hybridization refers to the mating of individuals from different species within the same genus. In this case, both the horse and donkey belong to the genus Equus but are different species.

4. **Confirming Mule as an Example of Interspecific Hybridization**: Since a mule is formed from the cross between a male donkey and a female horse, it is indeed an example of interspecific hybridization.

5. **Eliminating Other Options**:
- The option of a female donkey and a male horse is incorrect because it does not produce a mule.
- Out-crossing involves crossing species that are not closely related, which does not apply here since both parents belong to the same genus.
- Cross breeding involves crossing individuals from different breeds, which is not applicable as we are dealing with different species.

6. **Conclusion**: Therefore, the correct answer to the question is that a mule is an example of **interspecific hybridization**.