Genetic Structure of Adenoviruses versus Retroviruses

Statement 1 is incorrect because adenoviruses possess double-stranded DNA genomes, while retroviruses carry single-stranded RNA genomes that convert to DNA using reverse transcriptase. Statement 2 is correct because respiratory adenoviruses are a common cause of cold-like symptoms, and HIV (the virus that causes AIDS) is a classic retrovirus. > Retroviruses use single-stranded RNA to replicate, while adenoviruses rely on double-stranded DNA. Answer: (b).