Which of the following statements is not correct regarding inbreeding ?

Options

A. It is the breeding between animals of the same breed.
B. It decreases homozygosity.
C. It exposes harmful recessive genes.
D. It helps in accumulation of superior genes.

Explanation

To solve the question regarding which statement is not correct about inbreeding, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Inbreeding**: Inbreeding refers to the mating of individuals that are closely related genetically. This often involves breeding within the same breed or lineage.

2. **Analyze the Statements**:
- **Statement 1**: "It is the breeding between animals of the same breed."
- This statement is correct because inbreeding typically occurs within the same breed.

- **Statement 2**: "It decreases homozygosity."
- This statement is incorrect. Inbreeding actually increases homozygosity, as it leads to a higher proportion of identical alleles in the offspring due to the close genetic relationship of the parents.

- **Statement 3**: "It exposes harmful recessive genes."
- This statement is correct. Inbreeding can reveal harmful recessive traits that may not be expressed in a heterozygous state.

- **Statement 4**: "It helps in accumulation of superior genes."
- This statement is also correct. Inbreeding can help in the establishment of pure lines, which can lead to the accumulation of desirable traits.

3. **Identify the Incorrect Statement**: Based on the analysis, the statement that is not correct regarding inbreeding is "It decreases homozygosity."

### Final Answer:
The statement that is not correct regarding inbreeding is: **"It decreases homozygosity."**

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