Set 8: Cross-Text Connections (Intermediate)
Explanation
PASSAGE
Text 1 The central dogma of molecular biology states that genetic information flows in one direction: from DNA to RNA to Protein. This was long considered an absolute rule. Text 2 The discovery of retroviruses like HIV upended this dogma. Retroviruses use an enzyme called reverse transcriptase to copy their RNA genome back into DNA, proving that the flow of information can be bidirectional.
What is the significance of the retrovirus mentioned in Text 2?
Detailed Answer Explanation
This question asks you to compare perspectives from two passages. Text 1: DNA -> RNA (One way). Text 2: RNA -> DNA (Reverse). Significance: Disproves unidirectionality. Understanding how the authors relate to each other's views is essential. Identify whether they agree, disagree, or address different aspects of the topic. Focus on their specific claims and conclusions. When comparing texts, first identify each author's thesis or main argument. Then determine how these positions interact: do they complement each other, contradict each other, or address different aspects of the same issue? The relationship between texts reveals deeper meaning.
Key Evidence:
• "upended this dogma"
• "bidirectional"
Why others are wrong: A (Copy back into DNA.), B (Upended it.), C (RNA to DNA.).
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