So when transcription takes place our cell transcribes beginning on the three end and ending at the five end, so that we transcribe the new RNA beginning at the five and ending at the three end. And the method by which we actually transcribe is pretty simple, because the language that is used by RNA and DNA is exactly the same. That is, both of these molecules use nucleotides. So when transcribing from DNA to RNA, we synthesize RNA by using the nucleotides that are complementary to the nucleotides on the antisense DNA strands. So basically, if this is A, then we know this must be you. If this is cytositosine, this must be guanine.