Question

Select the statement which is correct about viroids.

• A. They were discovered by Karshan in $1966$
• B. They range in size from $266-450$ nucleotides
• C. The genome of viroids is larger than viruses
• D. They show a lot of sequence homology

Answer 1

Answer: (B)

They range in size from $266-450$ nucleotides

Viroids were discovered by Diener in 1971. The genome of viruses is larger than the viroid genome. They do not show a lot of sequence homology.

So, the correct answer is 'They range in size from 266-450 nucleotides.