Gene library consists of

Options

A. All fragments of a genome
B. Frozen germplasm
C. Tissue culture
D. Living bacteria having clones of genes.

Answer

**Step-by-Step Solution:**

1. **Understanding the Concept of a Gene Library**:
- A gene library is essentially a collection of DNA fragments that represent the genetic material of an organism.

2. **Identifying the Components of a Gene Library**:
- The gene library is made up of living bacterial colonies. These bacteria are used because they can replicate and maintain the DNA fragments.

3. **Transformation Process**:
- The bacteria in the gene library are transformed with different pieces of DNA from the organism of interest. This transformation allows the bacteria to carry and replicate these DNA fragments.

4. **Purpose of the Gene Library**:
- The main purpose of a gene library is to provide a source of genes of interest. Each bacterial colony in the library contains a clone of a specific DNA fragment, which may include a gene of interest.

5. **Conclusion**:
- Therefore, the correct answer to the question "Gene library consists of" is "living bacteria having clones of genes."

**Final Answer**: Gene library consists of living bacteria having clones of genes.

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