Question

In bacteria, gene transfer occurs by the following processes, except:

• A. Transduction
• B. Transversion
• C. Transformation
• D. Conjugation

Hint:

Gene transfer: Transformation, Transduction, Conjugation.
Transversion: a type of mutation (purine \(\leftrightarrow\) pyrimidine).

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Bacteria have several mechanisms for gene transfer.
These mechanisms allow genetic exchange between bacteria.

Step 2: Key Formula or Approach:
No specific formula.
Need to know the mechanisms of gene transfer.

Step 3: Detailed Explanation:
Gene transfer in bacteria occurs by:
- Transformation (uptake of naked DNA)
- Transduction (via bacteriophages)
- Conjugation (direct cell-to-cell contact)
Transversion is a type of point mutation.
It is not a mechanism of gene transfer.
Thus, transversion is the exception.

Step 4: Final Answer:
Transversion is NOT a mechanism of gene transfer in bacteria.
Hence, the correct option is (B).