If a mutation is not visible in successive generation it is called :

Options

A. Deletion
B. Dominant mutation
C. Recessive mutation
D. Segregation

Answer

**Step-by-Step Solution:**

1. **Understanding Mutation**: Mutations are changes in the base sequences of DNA. They can occur due to various factors, including chemical, physical, or biological agents, known as mutagens.

2. **Types of Mutations**: Mutations can be classified as dominant or recessive. Dominant mutations are expressed in the phenotype and are visible in successive generations, while recessive mutations are not.

3. **Dominant vs. Recessive Mutations**:
- **Dominant Mutations**: These mutations will manifest in the next generation because they can be expressed even if only one copy of the mutated gene is present.
- **Recessive Mutations**: These mutations require two copies (one from each parent) to be expressed phenotypically. If only one copy is present, the mutation remains hidden.

4. **Conclusion**: Since the question specifies that the mutation is not visible in successive generations, it indicates that the mutation is not expressed phenotypically. Therefore, the correct answer is that such a mutation is called a **recessive mutation**.

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