I promoters a. flank the rRNA precursor gene on the 3'-side. Eukaryotes control gene expression at the level of a. transcription. All of the above are true. Several R-loops formed. This indicates that a. the gene contains one intron.
Exons represent sequences of DNA that are a. never transcribed.
An intron is a. a region of mRNA that is not translated. All of these choices are true. When intron consensus sequences are mutated, a. abnormal splicing of genomic mRNA occurs. A spliceosome consists of a. mRNA precursor and snRNP's. In eukaryotes, ribosomal RNAs are a. encoded in several different genes that are transcribed and then spliced.