dsRNA is seen in

dsRNA is seen in

• A. Viruses that carry dsRNA
• B. Bacteria
• C. Plants
• D. Humans

Answer: (A)

Double-stranded RNA is a genome form found in certain viruses, not in normal cellular genomes. Most cells—bacteria, plants, and humans—have DNA as their genetic material, and their RNA used in expression is typically single-stranded. Some viruses, however, carry genomes that are double-stranded RNA, so dsRNA is literally present as the viral genome or produced during replication. Because dsRNA is not a typical feature of healthy cells, its presence is a hallmark of infection by a dsRNA virus. Hence, dsRNA is seen in viruses that carry dsRNA genomes. Examples include certain bacteriophages and animal viruses like rotavirus.

Double-stranded RNA is a genome form found in certain viruses, not in normal cellular genomes. Most cells—bacteria, plants, and humans—have DNA as their genetic material, and their RNA used in expression is typically single-stranded. Some viruses, however, carry genomes that are double-stranded RNA, so dsRNA is literally present as the viral genome or produced during replication. Because dsRNA is not a typical feature of healthy cells, its presence is a hallmark of infection by a dsRNA virus. Hence, dsRNA is seen in viruses that carry dsRNA genomes. Examples include certain bacteriophages and animal viruses like rotavirus.