BIOCHM 1090 Lecture Notes - Lecture 31: Ribosomal Rna, Intron, Transfer Rna
Document Summary
1. transcription begins when rna polymerase recognizes a control segment (promoter) in dna that precedes the nucleotides to be transcribed: rna polymerase moves down the dna segment, adding complementary nucleotides to the growing rna strand. 3. transcription ends when the rna polymerase reaches a termination sequence (terminator) that signals the end of the sequence to be copied: products. 1. the genetic code consists of consecutive bases known as codons. 2. the nucleotide triplets carried by mrna code for amino acids to be assembled into proteins. Monday, april 24, 2017 c) the code for a given gene may be interrupted by a noncoding sequence of bases called an intron. D. the initial mrna strand is known as heterogenous nuclear rna (hnrna) 1. in the nal mrna molecule released from the nucleus, the introns have been cut out and the eons spliced together a) this is accomplished through the action of a structure known as a spliceosome, a protein-
