The procedure through which a piece of DNA is introduced in a host bacterium is called

Options

A. Cloning
B. Transformation
C. PCR
D. Clonal selection

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks for the procedure through which a piece of DNA is introduced into a host bacterium.

2. **Identifying Key Terms**: The key terms in the question are "piece of DNA," "introduced," and "host bacterium."

3. **Exploring Relevant Processes**:
- **Cloning**: This involves inserting a gene or DNA fragment into a circular DNA molecule (vector) and replicating it to produce multiple copies. However, this does not specifically refer to the introduction of DNA into a bacterium.
- **Transformation**: This is the process where a piece of DNA is introduced into a host bacterium. It is a common technique used in molecular biology to create multiple copies of DNA.
- **PCR (Polymerase Chain Reaction)**: This is a method used to amplify a specific DNA sample, but it does not involve introducing DNA into bacteria.
- **Clonal Selection**: This refers to the immune response of T or B cells recognizing an antigen, which is unrelated to the introduction of DNA into bacteria.

4. **Conclusion**: The correct procedure for introducing a piece of DNA into a host bacterium is called **Transformation**.

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