Consider the following statements: 1. Adenoviruses have single-stranded DNA genomes whereas retroviruses have double-stranded DNA genomes. 2. Common cold is sometimes caused by an adenovirus whereas AIDS is caused by a retrovirus. Which of the statements given above is/are correct?

Options

1. 1 only
2. 2 only
3. Both 1 and 2
4. Neither 1 nor 2

Correct Answer

2 only

Explanation

Adenoviruses have double-stranded DNA, not single-stranded. They can cause common cold. Retroviruses, like HIV, contain single-stranded RNA that converts into DNA within host cells.

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