What are mutations?

Explanation

### Step-by-Step Text Solution

1. **Definition of Mutations**: Mutations are defined as sudden, inheritable changes in the genetic material of an organism. This means that these changes can be passed down from one generation to the next.

2. **Location of Mutations**: These changes occur in the genetic material, which primarily refers to DNA. Mutations can alter the sequence of nucleotides in the DNA.

3. **Causes of Mutations**: Mutations can occur naturally due to errors in DNA replication or can be induced by external factors.

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