Continued inbreeding, especially close inbreeding generally results in

Options

A. inbreeding depression
B. inbreeding stimulation
C. inbreeding hybridisation
D. inbreeding mutation.

Answer

### Step-by-Step Solution:

1. **Understanding Inbreeding**:
- Inbreeding refers to the mating of genetically similar organisms, often those that share a common ancestor. This can occur in plants and animals.

2. **Effects of Continued Inbreeding**:
- When inbreeding is continued, especially close inbreeding (where the organisms are very closely related), it can lead to a reduction in genetic diversity.

3. **Consequences of Reduced Genetic Diversity**:
- Reduced genetic diversity can lead to several negative outcomes, including decreased fertility, lower productivity, and increased susceptibility to diseases.

4. **Definition of Inbreeding Depression**:
- The phenomenon where the fitness of a population decreases due to inbreeding is known as "inbreeding depression." It is characterized by reduced biological fitness in a given population.

5. **Conclusion**:
- Therefore, the correct answer to the question is that continued inbreeding, especially close inbreeding, generally results in **inbreeding depression**.

### Final Answer:
- Continued inbreeding, especially close inbreeding, generally results in **inbreeding depression**.

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