Which one is used as vector in genetic engineering ?

Options

A. Plasmid
B. Bacterium
C. Cyanophage
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understand Genetic Engineering**: Genetic engineering involves the direct manipulation of an organism's genes using biotechnology. It is also referred to as genetic manipulation or genetic modification.

2. **Role of Vectors**: In genetic engineering, vectors are essential tools that carry foreign DNA into a host cell. They facilitate the transfer and integration of genetic material into the target organism.

3. **Types of Vectors**: Common vectors used in genetic engineering include plasmids, bacteriophages, and artificial chromosomes. Among these, plasmids are the most widely used due to their ability to replicate independently within a host cell.

4. **Process of Using Vectors**:
- **Cutting DNA**: The vector (e.g., plasmid) and the DNA of interest are cut using restriction enzymes.
- **Ligation**: The cut vector and DNA fragment are then ligated together to form recombinant DNA.
- **Transformation**: This recombinant DNA is introduced into a host cell, where it can replicate and express the desired traits.

5. **Identifying the Correct Vector**: In the context of the question, we need to identify which vector is commonly used in genetic engineering. The options provided include:
- A) Plasmid
- B) Bacterium
- C) Sinophase
- D) Other options

The correct answer is **A) Plasmid**, as plasmids are the primary vectors used in genetic engineering.

**Final Answer**: The vector used in genetic engineering is **Plasmid**.

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