When a mutational event leads to the replacement of one codon for another calling for the same amino acid, the resulting mutation is known as

Options

A. Frameshift
B. Non-sense
C. Missense
D. Silent

Answer

To solve the question regarding the type of mutation that results from the replacement of one codon with another that calls for the same amino acid, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Types of Mutations**:
- Familiarize yourself with the different types of mutations: frameshift, nonsense, missense, and silent mutations.

2. **Define Each Mutation Type**:
- **Frameshift Mutation**: This occurs due to the addition or deletion of one or more nucleotides, which shifts the reading frame of the genetic code.
- **Nonsense Mutation**: This is a point mutation that creates a premature stop codon, leading to truncated proteins.
- **Missense Mutation**: This type of mutation results in a change in one amino acid in the protein due to a change in the codon.
- **Silent Mutation**: This occurs when a change in the nucleotide sequence does not lead to a change in the amino acid sequence, meaning the same amino acid is produced.

3. **Analyze the Question**:
- The question specifies that a mutational event leads to the replacement of one codon with another that specifies the same amino acid. This means the amino acid sequence remains unchanged despite the change in the DNA sequence.

4. **Identify the Correct Answer**:
- Since the mutation does not affect the amino acid produced, the correct answer is **silent mutation**.

5. **Conclusion**:
- The resulting mutation from the replacement of one codon for another that calls for the same amino acid is known as a **silent mutation**.

### Final Answer:
The resulting mutation is known as a **silent mutation**.

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