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Question #46476
The Question
Analyze the following statements regarding the phenomenon of industrial melanism in Biston betularia. Which of the following statements is INCORRECT?
Options
- A.
The shift in the moth population towards the melanic form during peak industrialization represents directional natural selection.
- B.
The rapid decline of melanic moths following the implementation of clean air legislation proves that ecological fitness is an absolute, inherent property of the dominant genotype.
- C.
The survival advantage of the light-colored moths prior to industrialization was primarily due to camouflage against lichen-covered tree bark.
- D.
Despite severe predation pressure by birds during peak industrialization, the allele for light wing color was not completely eradicated from the gene pool.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Comparative_Analysis
Sharpen your ability to evaluate multiple scenarios and distinguish between competing potential answers.
Concepts Behind This Question
Ecological Fitness|Differential Reproductive Success|Biston betularia
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often harbor the misconception that 'fitness' equates to absolute genetic superiority.
By testing the post-clean air act reversal, the question forces the student to recognize that fitness is entirely relative to the immediate environment.
The trap relies on the word 'absolute' versus 'relative' fitness.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Evolution - Class 12 |
| Concept | Industrial Melanism |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |