Biology · Biodiversity | Variety of Life
Work through this past-paper style MCQ, then read the full explanation. Practice more biology questions on mMCQ with adaptive practice and topic analytics.
Genome of which of the following consists of a single molecule of DNA?
- A
HAV
- B
HBV
- C
HCV
- D
HIV
The correct answer is HBV. HBV, also known as Hepatitis B Virus, has a single circular double-stranded DNA genome. This genetic makeup sets it apart from the other options, which either have single-stranded RNA genomes (HAV, HCV, HIV) or undergo reverse transcription from RNA to DNA (HIV). Understanding the genetic material of each virus is crucial in identifying the correct answer.
HAV has a single-stranded RNA genome.
HBV has a single circular double-stranded DNA genome.
HCV is a single-stranded RNA virus.
HIV has a single-stranded RNA genome that is reverse-transcribed to form double-stranded DNA.
Tagged under Biology · Biodiversity | Variety of Life · 2006