Which is a DNA virus -

Ans. is 'b' i.e., Hepatitis BHepatitis B virus ( HBV)o Hepatitis B virus is the most widespread virus and the most important cause of viral hepatitis.o HBV belongs to Hepadna viridaeo HBV is hepadnavirus type-1o Hepatitis B is the only hepatitis virus which has DNA. All others are RNA viruses.o HBV contains two linear strands of DNA. One of the strands (the plus strand) is incomplete and other is complete (the minus strand) - Partially double stranded DNA.o HBV contains both DNA-dependent DNA polymerase and RNA dependent reverse transcriptase.o Instead of DNA replication directly from a DNA template, HBV relys on reverse transcription of minus strandDNA from a pregenomic RNA intermediate (like retrovirus).