Cloning gene is process where:

Options

A. gene is cloned in an animal
B. fragments of DNA are transferred from one organism to another usually carried on a DNA vector
C. fragment of DNA cloned in the same organism using carrier
D. DNA is cloned in plants

Answer

### Step-by-Step Solution:

1. **Understanding Gene Cloning**: Gene cloning is a molecular biology technique used to create copies of a specific gene. This process involves isolating a gene of interest and inserting it into a vector.

2. **Choosing a Vector**: The vector can be a plasmid (a small circular DNA molecule) or a virus. The vector serves as a carrier to transfer the gene of interest into a host organism.

3. **Creating Recombinant DNA**: The gene of interest is ligated (joined) to the vector DNA, forming what is known as recombinant DNA. This recombinant DNA contains both the vector DNA and the gene of interest.

4. **Transformation Process**: The recombinant DNA is introduced into a host cell (which can be a bacterium, plant, or animal cell) through a process called transformation. This allows the host cell to take up the recombinant DNA.

5. **Clonal Expansion**: Once inside the host cell, the recombinant DNA is replicated along with the host's DNA during cell division. As the transformed cell divides, it creates a colony of cells, all containing copies of the gene of interest.

6. **Conclusion**: The correct answer to the question is that gene cloning involves the transfer of fragments of DNA from one organism to another, usually carried on a DNA vector.

### Final Answer:
**Fragments of DNA are transferred from one organism to another usually carried on a DNA vector.**

---