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Question #46420
The Question
Which of the following statements regarding the evolutionary transition from abiogenesis to the modern Central Dogma is INCORRECT?
Options
- A.
RNA's ability to act as both a genetic blueprint and a biocatalyst was essential for the earliest self-replicating systems.
- B.
The Hershey-Chase experiment demonstrates that DNA's chemical stability made it the first self-replicating polymer to emerge in the prebiotic soup.
- C.
The modern Central Dogma is a derived evolutionary state where DNA replaced RNA as the primary genetic material because the 2'-OH group made RNA labile.
- D.
The catalytic role of 23S rRNA in peptide bond formation serves as an extant molecular fossil supporting the RNA World hypothesis.
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
Ribozymes|Hershey-Chase Isotopic Labeling|Molecular Basis of Inheritance
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often conflate the definitive proof of DNA as the current universal genetic material (Hershey-Chase experiment) with the evolutionary timeline of abiogenesis.
The trap relies on the 'Common Half-Truth' that DNA is the ultimate genetic material, tricking students into forgetting that RNA had to evolve first to solve the prebiotic 'chicken-and-egg' problem of needing a catalyst to replicate genetic information.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Evolution - Class 12 |
| Concept | Abiogenesis vs. Biogenesis |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |