<prompt> What is the sequence which a retrovirus follows on entering a host cell?RNA - DNA - RNARNA - DNADNA - RNADNA - RNA - DNA  <response>: Ans. is a i.e., RNA - DNA - RNARef: Ananthanarayan, 9the, p. 574 and 8the, p. 570 When HIV infects a cell, the viral RNA is transcribed by reverse transcriptase, first into single stranded DNA and then to double stranded DNA Provirus. Provirus is integrated into host cell chromosome. This provirus initiates viral replication by directing synthesis of viral RNA, in response to viral promoters. 