Consider the following statements: 1. Adenoviruses have single-stranded DNA genomes whereas retroviruses…
Consider the following statements: 1. Adenoviruses have single-stranded DNA genomes whereas retroviruses have double-stranded DNA genomes. 2. Common cold is sometime caused by an adenovirus whereas AIDS is caused by a retrovirus. Which of the statements given above is/are correct?
1 only
2 only
Both 1 and 2
Neither 1 nor 2
Solution
Adenoviruses have double-stranded DNA, while retroviruses have single-stranded RNA (Statement 1 incorrect). Common cold can be caused by adenoviruses, and AIDS is caused by HIV — a retrovirus (Statement 2 correct).