Question

Viral capsids encase the genome, which may be composed of . . .

Question 47 options:

	Double stranded DNA or RNA, but not in the same species
	dsDNA
	ssDNA
	Only double stranded DNA or RNA
	dsRNA

Answer 1

Viral genomes

Viral genomes are enclosed in capsids. The virus contain either DNA or RNA genes- hence it is known as DNA virus or RNA virus. It can be double stranded or single stranded in nature. Majority of viruses have RNA genomes. Plant viruses have single stranded RNA genome and bacteriophages have double stranded DNA genomes. So there are four possibilities,

Single stranded RNA genome- Poliovirus

Double stranded RNA virus - Reovirus

Single stranded DNA virus - Parvo virus

Double stranded DNA virus - Poxvirus, Adenovirus

So viral genome may be composed of Double stranded DNA or RNA, but not in the same species is the answer.

Other options are wrong.