How can DNA segment, separated by gel electrophoresis be visualised and isolated ?

Explanation

To visualize and isolate DNA segments separated by gel electrophoresis, follow these steps:

### Step-by-Step Solution:

1. **Perform Gel Electrophoresis**:
- Prepare an agarose gel and load the DNA samples into the wells.
- Apply an electric field across the gel. DNA is negatively charged due to its phosphate backbone, so it will migrate towards the positive electrode.
- As the DNA fragments move through the gel, they separate based on size; smaller fragments travel faster and further than larger ones.
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