Question

In some viruses, RNA is present instead of DNA indicating that

• A. Their nucleic acid must combine with host DNA before replication
• B. They cannot replicate
• C. There is no hereditary information
• D. RNA can act to transfer heredity

Answer 1

The correct option is D RNA can act to transfer heredity

An RNA virus is a virus that has RNA (ribonucleic acid) as its genetic material. This nucleic acid is usually single-stranded RNA (ssRNA), but may be double-stranded RNA (dsRNA). In some viruses, RNA is present instead of DNA indicating that RNA can act to transfer heredity. They use RNA to transfer genetic information. Thus, option D is correct.