Eukaryotic rrna gene organization rRNA is synthesized in the nucleolus and assembled with proteins to form subunit the subunit is then transported into cytoplasm rDNA repeat unit ext ribosomal DNA repeating Ribosomal DNA repeating unit unIt Ribosomal DNA transcription unit 58S 18S rRNA rRNA gene 28s rRNA gene DNA NTS ETS ITS ETS Transcription b) Processing of pre-rRNA TranscriptionEukaryotic rRNA gene organization • rRNA is synthesized in the nucleolus and assembled with proteins to form subunit • the subunit is then transported into cytoplasm