Now, one important point that I did not mention in this part is this last t here contains an open hydroxyl group. And that open hydroxyl group is needed to actually synthesize the phosphodiasta bonds. And so now that we have this hydroxyl group, that transcriptase in this case can begin to synthesize those nucleotides and for the same exact reason. Now that we have the hydroxyl group on this side attached to this C, now if we add the DNA polymerase in step six, it can begin the synthesis and elongation and the replication of this complementary DNA molecule. And after step six, we have the double stranded C DNA molecule that we spoke about in this step. And this cDNA molecule, double stranded cDNA molecule can now be modified by attaching Cohesive ends, sticky ends to both sides of that DNA molecule.