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

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Q: (IAS/2021)
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?

question_subject: 

Science

question_exam: 

IAS

stats: 

0,165,134,23,165,79,32

keywords: 

{'dna genomes': [0, 0, 0, 1], 'retroviruses': [0, 0, 0, 1], 'retrovirus': [0, 0, 0, 2], 'adenoviruses': [0, 0, 0, 1], 'adenovirus': [0, 0, 0, 2], 'common cold': [1, 0, 0, 0], 'aids': [4, 0, 1, 3]}

The given statements are incorrect. Adenoviruses have double-stranded DNA genomes whereas retroviruses have single-stranded RNA genomes that are reverse transcribed into double-stranded DNA. Common cold is indeed caused by some strains of adenoviruses, but AIDS is caused by the human immunodeficiency virus (HIV), which is a retrovirus. Therefore, the correct answer is option 2: 2 only.

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