Question:
Coronavirus genome consists of
Coronavirus genome consists of
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Positive-sense RNA viruses can begin translation immediately using host ribosomes.
Updated On: Jan 2, 2026
- double-stranded DNA
- double-stranded RNA
- negative-sense single-stranded RNA
- positive-sense single-stranded RNA
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The Correct Option is D
Solution and Explanation
Coronaviruses are RNA viruses belonging to the family Coronaviridae.
Their genome is composed of positive-sense single-stranded RNA (+ssRNA), one of the largest among RNA viruses.
Positive-sense RNA acts directly as mRNA, allowing immediate translation upon entering the host cell.
Negative-sense RNA viruses require polymerase to create a complementary strand, which coronaviruses do not.
Therefore, options (A), (B), and (C) are incorrect, making option (D) the only valid choice.
Their genome is composed of positive-sense single-stranded RNA (+ssRNA), one of the largest among RNA viruses.
Positive-sense RNA acts directly as mRNA, allowing immediate translation upon entering the host cell.
Negative-sense RNA viruses require polymerase to create a complementary strand, which coronaviruses do not.
Therefore, options (A), (B), and (C) are incorrect, making option (D) the only valid choice.
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