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Question #47448
The Question
A specific recessive allele (v) in a wild mammalian population causes the malformation of otoliths in the macula of the inner ear. In an environment with high predator density, how will this physiological defect affect the population's Hardy-Weinberg (H-W) equilibrium over successive generations?
Options
- A.
The population deviates from H-W equilibrium because impaired dynamic equilibrium in vv individuals leads to natural selection, decreasing the value of q.
- B.
The population deviates from H-W equilibrium because impaired static equilibrium and linear acceleration in vv individuals introduces natural selection, altering allelic frequencies.
- C.
The population remains in H-W equilibrium because the sum of the genotypic frequencies (p^2 + 2pq + q^2) will mathematically always equal 1, regardless of the predation rate.
- D.
The population deviates from H-W equilibrium because the mutation induces non-random mating by directly altering the auditory receptors in the organ of Corti.
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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
Hardy-Weinberg Equilibrium Variables|Vestibular Equilibrium Mechanics
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: This question tests two distinct NCERT concepts simultaneously.
First, the anatomical distinction between static equilibrium (macula/otoliths) and dynamic equilibrium (crista ampullaris).
Second, a common misconception in Population Genetics: students often confuse the mathematical fact that genotype frequencies always sum to 1 (p^2 + 2pq + q^2 = 1) with the biological state of Hardy-Weinberg 'equilibrium', which specifically dictates that allele frequencies do not change over time.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Neural Control and Coordination - Class 11 |
| Concept | Vestibular Equilibrium Mechanics |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |