Mule and hinny are produced by hybridization horse and donkey. But they are sterile. Justify.

Explanation

### Step-by-Step Solution:

1. **Understanding Hybridization**:
- Hybridization occurs when two different species interbreed. In this case, a horse (Equus ferus caballus) and a donkey (Equus africanus asinus) produce hybrids known as mules and hinnies.

2. **Defining Mules and Hinnies**:
- A mule is the offspring of a male donkey and a female horse.
- A hinny is the offspring of a male horse and a female donkey.
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