<prompt> Reverse transcriptase is a RNA dependent DNA polymerase. Which of the following uses reverse transcriptase?Hepatitis A virusHepatitis B virusHepatitis C virusHepatitis E virus  <response>: Ans. b. Hepatitis B virus Ref: Ananthanarayan 9e p544, 8e p540; Harrison 19e p2005; Robbins 9e p831-832Hepatitis B virus uses reverse transcriptase.Hepatitis B virus: A polymerase Pol that exhibits both DNA polymerase activity and reverse transcriptase activity. Genomic replication occurs via an intermediate RNA template, through a unique replication cycle: DNA - RNA - DNA. --Robbins 9e p832The third of the HBV genes is the largest, the Pgene, which codes for the DMA polymerase: as noted above, this enzyme has both DMA-dependent DMA polymerase and RMA-dependent reverse transcriptase activities. --Harrison 19e p2005Hepatitis B virus Genes AntigensGeneAntigen ProducedC geneHBcAg Hepatitis B core antigenQC Pre C genesHBeAg Hepatitis B e antigen QS geneHBsAg Hepatitis B surface antigen: large, middle small HBsAg QP geneDNA polymerase pol reverse transcriptase QX geneHBxAg: virus replication transcriptional transactivator Q 