A normal spontaneous rate for a single gene is one mutation in every… replication

Options

A. `10^(3)-10^(5)`
B. `10^(5)-10^(7)`
C. `10^(6)-10^(9)`
D. `10^(7)-10^(10)`

Answer

To solve the question regarding the normal spontaneous rate for a single gene mutation during DNA replication, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Spontaneous Mutations**:
- Spontaneous mutations are random changes that occur in the DNA sequence during replication. These mutations can arise from various factors such as errors in DNA replication, environmental influences, or internal cellular processes.

2. **Identify the Rate of Spontaneous Mutations**:
- The question asks for the normal spontaneous rate of mutation for a single gene during replication. It is important to know that mutations occur at a very low frequency.

3. **Analyze the Options Provided**:
- The options given are:
- A) \(10^3\) to \(10^5\)
- B) \(5\) to \(7\)
- C) \(10^6\) to \(10^9\)
- D) \(10^7\) to \(10^{10}\)

4. **Determine the Correct Range**:
- Based on biological studies, the spontaneous mutation rate for a single gene is typically found to be in the range of \(10^6\) to \(10^9\) mutations per replication. This means that for every \(10^6\) to \(10^9\) replications, you can expect one mutation.

5. **Select the Correct Answer**:
- From the analysis, the correct option that matches the normal spontaneous mutation rate for a single gene is:
- **C) \(10^6\) to \(10^9\)**

### Final Answer:
The normal spontaneous rate for a single gene is one mutation in every \(10^6\) to \(10^9\) replications.

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