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Question #133788
The Question
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): The accidental release of a genetically modified microbe carrying an ampicillin resistance gene into a natural soil ecosystem can lead to a severe decline in native microbial biodiversity. Reason (R): The resistance gene can be acquired by wild soil bacteria via horizontal gene transfer, providing a selective advantage that leads to the competitive exclusion of indigenous microflora.
In the light of the above statements, choose the most appropriate answer from the options given below:
Options
- A.
Both (A) and (R) are correct and (R) is the correct explanation of (A)
- B.
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
- C.
(A) is correct but (R) is not correct
- D.
(A) is not correct but (R) is correct
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Evolutionary_Exception
Tackle problems where standard rules evolve or change based on specific environmental constraints.
Concepts Behind This Question
Selectable Marker vs Cloning Site|Alien Species Invasion Impacts|Biopiracy and Patents
Why This Question Is Tricky
Examiner Levers
Logical Assertion
Tests the causal relationship between two true statements.
Difficulty Boost : +4Common Mistakes
Conceptual Pivot: Bridging Biotechnology (Selectable Markers) with Ecology (Competitive Exclusion and Alien Species Invasion).
Students often view selectable markers purely as a laboratory tool for identifying transformants, failing to recognize their potential as a potent ecological disruptor (selective advantage) if biosafety containment fails.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Biotechnology : Principles and Processes - Class 12 |
| Concept | Selectable Marker vs Cloning Site |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |