What are the differences between DNA viruses and RNA viruses?
Posted January 26, 2023
Basis of differentiation |
DNA viruses |
RNA viruses |
Definition |
Are viruses whose genetic information is stored in the form of DNA |
Are viruses whose genetic information is stored in the form of RNA |
Genome |
Genetic material consists of deoxyribonucleic acid (DNA) |
Genetic material consists of ribonucleic acid (RNA) |
Double-stranded/Single-stranded DNA/ RNA |
- Two types: double-stranded DNA and single-stranded DNA viruses - Double stranded DNA viruses are more common |
- Two types: double-stranded RNA and single-stranded RNA - Single-stranded RNA viruses are more common |
Size of genome |
Comparatively larger genome size |
Comparatively smaller genome size |
Mutation rate |
Lower mutation rate |
Higher mutation rate |
Stability |
More stable because of the lower mutation rate |
Unstable because of the higher mutation rate. |
Assembly |
Usually assembled in the nucleus |
Assembled in the cytoplasm |
Replication |
Replicated inside the host cell’s nucleus |
First transcribed and then replicated in the cytoplasm |
Accuracy of replication |
Shows accurate replication |
Shows error-prone replication |
Procapsid |
The procapsid contains the newly-synthesized viral DNA
|
Procapsid is not formed |
Protein Synthesis
|
Viral DNA is first transcribed into RNA, and mRNA is then translated into viral proteins |
RNA viruses already contain RNA in the genome and can hence bypass transcription during protein synthesis |
Baltimore classification types |
Included in groups Ⅰ, Ⅱ, and Ⅶ of the Baltimore classification |
Included in groups Ⅲ, Ⅳ, Ⅴ, and Ⅵ of the Baltimore classification |
Examples |
Herpesviruses, Adenoviruses, Poxviruses, Hepadnaviruses, and Papillomaviruses |
Retroviruses, Reoviruses, Picornaviruses, Togaviruses, and Orthomyxoviruses |
Diseases caused |
Chickenpox, herpes, and smallpox |
Influenza, the common cold, Aids, polio, Ebola hemorrhagic fever, SARS, measles, and West Nile fever |
Moisture modulates soil reservoirs of active DNA and RNA viruses