Explain the process of gel-electrophoresis technique.

Explanation

### Step-by-Step Solution for Gel Electrophoresis Technique

1. **Purpose of Gel Electrophoresis**:
- Gel electrophoresis is primarily used for the separation of DNA molecules and their fragments based on size. This technique is crucial in various applications, including DNA fingerprinting, genetic analysis, and molecular cloning.

2. **Preparation of Agarose Gel**:
- Agarose, a polysaccharide extracted from seaweed, is used to create a gel matrix. The agarose is dissolved in a buffer solution and then heated to form a gel. Once cooled, it solidifies into a gel-like consistency.

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