One isoform of this enzyme requires lysyl-tRNA-3 to bind to a PBS before it can bind its substrate. Drugs that competitively inhibit this enzyme are normally given in pairs like tenofovir alafen·amide-emtrici·tabine. (15[1])In certain “foamy” organisms, this enzyme is uniquely synthesized from a separate mRNA strand rather than a Gag precursor. The forced copy choice and the dynamic choice models describe a process that compensates for this enzyme’s high error rate and is called (*) template switching. (-5[1])An RNAse H domain is present on this enzyme which, along with a protease and integrase, are transcribed from the pol (-5[1])gene. Gene expression is frequently measured using a variant of PCR reliant on this enzyme’s ability to generate cDNA. For 10 points, name (10[1])this central (10[1])dogma-violating enzyme that allows retroviruses like HIV to produce DNA from an RNA template. (10[1]0[1])■END■