Describe the characteristics a cloning vector must possess.

Explanation

To describe the characteristics a cloning vector must possess, we can outline the following key points:

1. **Unique Restriction Sites**: A cloning vector must have unique restriction sites. This means that it should have specific locations where restriction enzymes can cut the DNA. Having unique sites ensures that the vector does not get fragmented into multiple pieces when the enzyme is applied, allowing for the insertion of foreign DNA at a specific site.

2. **DNA Molecule**: The cloning vector must be a DNA molecule. This is essential because the purpose of a cloning vector is to carry and replicate the DNA segment of interest. The vector should be compatible with the DNA that is being cloned.

3. **Origin of Replication (ori)**: The vector must contain an origin of replication (ori). This is a specific sequence of DNA that signals the starting point for DNA replication. The presence of ori is crucial for the vector to be replicated within a host cell.

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