Which of the following is correct to check the inbreeding depression?

Options

A. Artificial hybridisation
B. Cross breeding
C. Selecting animal should be mated with unrelated superior animals of the same breed
D. Selected animal should be mated with unrelated superior animals of the different breed

Answer

To solve the question regarding the correct method to check inbreeding depression, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Inbreeding Depression**: Inbreeding depression refers to the reduced biological fitness in a given population due to inbreeding, or mating of closely related individuals. It often leads to a decrease in genetic diversity and can result in the expression of deleterious traits.

2. **Identifying the Options**: The question presents several options regarding mating strategies to check inbreeding depression:
- Option A: Artificial hybridization
- Option B: Crossbreeding
- Option C: Selecting animals to mate with unrelated superior animals of the same breed
- Option D: Selecting animals to mate with unrelated superior animals of different breeds

3. **Evaluating Each Option**:
- **Option A (Artificial Hybridization)**: This method can be used to introduce new genetic material but is not a direct strategy to combat inbreeding depression.
- **Option B (Crossbreeding)**: This is a general term that can help increase genetic diversity, but it doesn't specify the use of unrelated superior animals.
- **Option C (Unrelated superior animals of the same breed)**: While this option promotes some genetic diversity, it may not be sufficient to fully address inbreeding depression if the genetic pool is still limited.
- **Option D (Unrelated superior animals of different breeds)**: This option introduces the most genetic diversity and is effective in overcoming inbreeding depression by enhancing the gene pool.

4. **Conclusion**: After evaluating the options, it is clear that the best method to check inbreeding depression is to select animals to mate with unrelated superior animals of different breeds (Option D).

### Final Answer:
The correct answer to check inbreeding depression is: **Selected animals should be mated with unrelated superior animals of different breeds.**

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