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?

Statement 2 is correct because Adenoviruses are a frequent cause of respiratory infections like the common cold, while HIV, the virus responsible for AIDS, is a classic example of a retrovirus. Statement 1 is incorrect because Adenoviruses possess double-stranded DNA (dsDNA) genomes, whereas Retroviruses have single-stranded RNA (ssRNA) genomes that they convert into DNA using the enzyme reverse transcriptase. The core concept being tested is the fundamental classification of viruses based on their genetic material (DNA vs. RNA) and the specific diseases they cause.