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Question #46912
The Question
A population of a dioecious pseudocoelomate (phylum Aschelminthes) exhibits pronounced sexual dimorphism. Over time, a geographically isolated sub-population experiences strong directional selection on male copulatory structures, eventually leading to complete reproductive isolation from the parent population. Regarding their taxonomic and evolutionary status, which of the following statements is NOT correct?
Options
- A.
Under Ernst Mayr's Biological Species Concept, the sub-population now represents a distinct fundamental unit of classification.
- B.
The directional selection shifted the peak of the phenotypic distribution, establishing a pre-zygotic mechanical barrier.
- C.
According to the International Code of Zoological Nomenclature (ICZN), the new population must be assigned a new generic name to reflect its reproductive isolation.
- D.
Despite retaining the same basic pseudocoelomate body plan, the two populations can no longer share the same specific epithet.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Regulatory_Failure
Understand how NOT, EXCEPT, and logical constraints are used to manipulate exam results.
Concepts Behind This Question
Binomial Nomenclature Rules|Natural Selection Directionality|Aschelminthes Sex Differentiation
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Distinguishing between the taxonomic ranks of Genus and Species during speciation.
The trap exploits the misconception that a new reproductively isolated population automatically requires a completely new Binomial name (both Genus and species).
In reality, speciation primarily alters the specific epithet, while the generic name remains shared among closely related species.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | The Living World - Class 11 |
| Concept | Binomial Nomenclature Rules |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |