Question:
The natural mode of exchange of genetic material in bacteria is
The natural mode of exchange of genetic material in bacteria is
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Natural gene transfer in bacteria:
- Conjugation: Cell-to-cell contact.
- Transduction: Via bacteriophages.
- Transformation: Uptake of DNA from environment.
- Conjugation: Cell-to-cell contact.
- Transduction: Via bacteriophages.
- Transformation: Uptake of DNA from environment.
Updated On: Sep 1, 2026
- Transduction
- Conjugation
- Mutation
- Electroporation
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Question:
This question tests knowledge of horizontal gene transfer in bacteria.
Step 2: Detailed Explanation:
The natural modes of genetic exchange in bacteria are:
- Conjugation (B): Direct transfer of DNA through cell-to-cell contact (via pilus).
- Transduction (A): Transfer of DNA by bacteriophages.
- Transformation: Uptake of naked DNA from the environment.
Mutation (C): Changes in DNA sequence (not exchange of genetic material).
Electroporation (D): Artificial method for DNA uptake (not natural).
Thus, conjugation is the natural mode of genetic exchange.
Step 3: Final Answer:
Thus, conjugation is the natural mode of genetic exchange in bacteria, which corresponds to option (B).
[0.5cm]
This question tests knowledge of horizontal gene transfer in bacteria.
Step 2: Detailed Explanation:
The natural modes of genetic exchange in bacteria are:
- Conjugation (B): Direct transfer of DNA through cell-to-cell contact (via pilus).
- Transduction (A): Transfer of DNA by bacteriophages.
- Transformation: Uptake of naked DNA from the environment.
Mutation (C): Changes in DNA sequence (not exchange of genetic material).
Electroporation (D): Artificial method for DNA uptake (not natural).
Thus, conjugation is the natural mode of genetic exchange.
Step 3: Final Answer:
Thus, conjugation is the natural mode of genetic exchange in bacteria, which corresponds to option (B).
[0.5cm]
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