Which statement is correct for bacterial transduction : -

Options

A. Transfer of some genes from one bacteria to another bacteria through virus
B. Transfer of genes from one bacteria to another bacteria by establishing contact
C. Bacteria obtained its DNA directly from mother cell
D. Bacteria obtained DNA from other external source

Answer

To determine the correct statement regarding bacterial transduction, we can follow these steps:

### Step 1: Understand Bacterial Transduction
Bacterial transduction is a process where genetic material is transferred from one bacterium to another through a virus, specifically bacteriophages. This distinguishes it from other methods of genetic exchange in bacteria.

### Step 2: Differentiate Between Genetic Exchange Methods
1. **Bacterial Conjugation**: This involves direct contact between two bacteria, where one bacterium transfers genetic material to another through a structure called a pilus. This is not transduction.

2. **Bacterial Transformation**: This is the uptake of free DNA from the environment by a bacterium. This process does not involve a virus and is also not transduction.

3. **Bacterial Transduction**: In this method, a bacteriophage (a virus that infects bacteria) acts as a vector to transfer genetic material from one bacterium to another. This is the correct definition of bacterial transduction.

### Step 3: Identify the Correct Statement
Given the definitions:
- The statement that describes bacterial transduction accurately is that it involves the transfer of genetic material between bacteria via a virus (bacteriophage).

### Conclusion
The correct statement regarding bacterial transduction is that it is the transfer of genes from one bacterium to another through a virus.

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