Inbreeding depression is common in

Options

A. cross-pollinated crop
B. genetically engineered crop
C. self pollinated crop
D. all of these

Answer

**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 individuals that are closely related genetically. This often leads to an increase in the expression of deleterious alleles.

2. **Identifying the Context:**
- Inbreeding depression is particularly common in populations where individuals are closely related, leading to a lack of genetic diversity. This situation can result in the accumulation of harmful genetic traits.

3. **Analyzing the Options:**
- **Cross-pollinated crops:** These crops involve the mixing of genes from different plants, which typically belong to different families. This genetic diversity helps prevent inbreeding depression.
- **Genetically engineered crops:** These crops are created by combining desired traits from different plants, which also promotes genetic diversity and reduces the risk of inbreeding depression.
- **Self-pollinated crops:** In these crops, the plant fertilizes itself, leading to the reproduction of closely related individuals. This can result in a higher chance of inbreeding depression due to the limited genetic variation.

4. **Conclusion:**
- Based on the analysis, inbreeding depression is most commonly found in self-pollinated crops because they involve mating between closely related individuals, which can lead to the accumulation of harmful genetic traits.

5. **Final Answer:**
- Inbreeding depression is common in self-pollinated crops.

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