The termination of transcription of pre-rRNA genes is an intricate process that is brought about by polymerase (Pol I). Watch this video if you want to know more about their termination process in eukaryotes in easily understandable words. Timeline: 00:00 Introduction 01:39 termination signal 02:36 recruitment of CSTR and binding of cleavage factors 04:01 stopping RNA polymerase