Short legged variety of sheep is an example of :-

Options

A. Recessive germinal mutation
B. Dominant germinal mutation
C. Recessive somatic mutation
D. Dominant somatic mutation

Answer

To determine the correct answer to the question regarding the short-legged variety of sheep, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the classification of the short-legged variety of sheep. We need to identify whether this trait is due to a recessive or dominant mutation, and whether it is a germinal or somatic mutation.

2. **Historical Context**: In 1791, a scientist named Wright observed a short-legged sheep in a flock. This observation is crucial as it indicates that this trait has been recognized historically and studied.

3. **Identify the Genetic Basis**: The short-legged sheep are part of a breed known as the Ancon breed. The genetic basis for the short legs is important. The transcript mentions that the homozygous recessive genotype (where both alleles are the same and recessive) results in short legs.

4. **Heterozygous Condition**: It is noted that heterozygous individuals (those with one dominant and one recessive allele) exhibit long legs. This indicates that the short-legged trait is recessive, as the presence of a dominant allele masks the expression of the recessive trait.

5. **Germinal vs. Somatic Mutation**: The transcript explains that a mutation in germinal cells (which give rise to gametes) is called a germinal mutation. Since the short-legged trait can be passed on to offspring, it suggests that the mutation occurred in the germinal cells.

6. **Conclusion**: Based on the information provided, the short-legged variety of sheep is a result of a recessive mutation that occurred in germinal cells. Therefore, the correct classification is "recessive germinal mutation."

### Final Answer:
The short-legged variety of sheep is an example of **recessive germinal mutation**.

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