So we simply create a DNA primer with the polyt sequence and now we mix the primer with our mRNA molecule in a solution at the right temperature and the kneeling process will take place and the DNA primer will hybridize with this polyatail on the three prime end of that mRNA molecule. Now in the next step, in step two we want to add that reverse transcriptase. That reverse transcriptase will bind onto that primer and in the presence of, of the four types of deoxy nucleus cytrifosphates, it will begin to synthesize that complementary strain, the DNA strand that is complementary to that mRNA. And so Ian diagram two, the red strand is that complementary DNA molecule while the blue strand is that mRNA molecule. So in step two we basically have this hybrid complex form where one strand is the DNA and the other strand is the RNA. And so in the next step, in step three, we want to reassociate or we want to dissociate.