What is point mutation? Give one example.

Explanation

### Step-by-Step Text Solution

1. **Definition of Mutation**:
- Mutations are changes that occur in the base pairs of DNA. They can happen due to various factors and can lead to different genetic variations.

2. **Understanding Point Mutation**:
- A point mutation is a specific type of mutation where a change occurs at a single base pair in the DNA sequence. This means that only one nucleotide is altered, which can lead to significant changes in the resulting protein.

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