Homozygosity can be deveveloped by

Options

A. inbreeding
B. out breeding
C. cross breeding
D. MOET

Answer

### Step-by-Step Solution:

1. **Understanding Homozygosity**:
- Homozygosity refers to a genetic condition where an individual has two identical alleles for a particular gene. This means that there are no variations in the alleles present.

2. **Defining Inbreeding**:
- Inbreeding is the mating or breeding of closely related individuals. This often occurs within the same species and can lead to a higher probability of offspring inheriting the same alleles from both parents.

3. **Effects of Inbreeding**:
- When inbreeding occurs over several generations (typically 4 to 5), it leads to a decrease in genetic variation. As a result, the offspring are more likely to be homozygous for certain traits.

4. **Consequences of Homozygosity**:
- Increased homozygosity can lead to the expression of recessive traits, which may be detrimental. This can result in a phenomenon known as inbreeding depression, where the overall fitness and reproductive success of the organism decline.

5. **Comparison with Other Breeding Techniques**:
- Unlike inbreeding, techniques such as outbreeding, crossbreeding, and multiple ovulation embryo transfer involve mating individuals from different genetic backgrounds. These methods promote genetic diversity and prevent the negative effects associated with homozygosity.

6. **Conclusion**:
- Therefore, the development of homozygosity is primarily associated with inbreeding, making it the correct answer to the question.

### Final Answer:
Homozygosity can be developed by **inbreeding**.

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