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Question #45548
The Question
A healthy, disease-resistant human male undergoes a bilateral vasectomy before producing any offspring. From the perspective of population genetics and the modern synthetic theory of evolution, which of the following statements accurately describes the consequence of this procedure?
Options
- A.
His Darwinian fitness is reduced to zero, effectively removing his unique allele combinations from the population's gene pool.
- B.
His physical fitness ensures a high adaptive value, but his alleles will only spread through genetic drift.
- C.
The procedure induces a genetic bottleneck in the population by restricting the flow of superior alleles.
- D.
His alleles will continue to influence the Hardy-Weinberg equilibrium of the population due to his prolonged lifespan.
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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
Ecological Fitness|Population Growth Model|Birth/Death Rate
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often confuse 'physical fitness' (health, strength, disease resistance) with 'Darwinian fitness' (reproductive success).
The trap lies in assuming a healthy individual still contributes to evolution.
The question tests the synthesis of Reproductive Health (sterilization) and Evolution (fitness), highlighting that surgical sterilization acts as an absolute evolutionary dead-end, equating the individual's genetic contribution to zero.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Reproductive Health - Class 12 |
| Concept | Sterilization Irreversibility |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |