A number of bacteria with recombinant DNA of same type form :

Options

A. clone library
B. gene library
C. gene pool
D. gene frequency

Answer

To solve the question "A number of bacteria with recombinant DNA of the same type form:", we need to analyze the given options and understand the terminology related to biotechnology.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about a group of bacteria that all contain the same type of recombinant DNA. This implies that these bacteria are clones of each other, as they all carry identical genetic material.

2. **Analyzing the Options**:
- **Clone Library**: This refers to a collection of cloned DNA fragments that are stored in a vector. It is not specifically about bacteria with the same recombinant DNA.
- **Gene Library**: This is a broader term that refers to a collection of DNA sequences from an organism, which can include various genes and their variants.
- **Gene Pool**: This term describes the total genetic diversity found within a population, not specifically related to recombinant DNA.
- **Gene Frequency**: This refers to how often a particular gene variant appears in a population, which is not relevant to the question.

3. **Identifying the Correct Answer**: Since the question specifies "a number of bacteria with recombinant DNA of the same type," the most appropriate answer is **Gene Library**. This is because a gene library can contain multiple clones of the same recombinant DNA, representing a collection of genes from a single organism.

4. **Final Answer**: The correct answer is **Gene Library**.