Protein synthesis: transcription

RNA polymerase breaks the hydrogen bonds between DNA nucleotides and DNA unwinds forming a template/antisense strand and a coding/sense strand at a start codon free RNA nucleotides form phosphodiester bonds between nucleotides and hydrogen bonds by complementary base pairing between RNA and DNA bases a strand of mRNA is made once RNA polymerase has reached a stop codon the mRNA molecule leaves the nucleus through a nuclear pore