[Solved] Consider the following statements: 1. Adenoviruses have single-standard DNA genomes whereas retroviruses have double-standard 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?

Q70. Consider the following statements:

1. Adenoviruses have single-standard DNA genomes whereas retroviruses have double-standard 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?

A. I only

B. 2 only

C. Both 1 and 2

D. Neither 1 nor 2

Answer: b

• The adenovirus genome is a single linear molecule of double-stranded DNA. Retroviruses are single-stranded RNA animal viruses that employ a double-stranded DNA intermediate for replication.

• Adenoviruses are common viruses that cause a range of illness. They can cause cold-like symptoms, fever, sore throat, bronchitis, pneumonia, diarrhoea, and pink eye (conjunctivitis). AIDS is caused by retro virus. So, statement 2 is correct.