Basic Molecular Genetic Mechanisms By: Heather Allen

Transcription Process of making RNA from DNA Initiation Elongation Termination

The Basic Mechanism of Transcription Figure 4-15

Structure of RNA Polymerase Pg 111 Structure fundamentally similar Two related large subunits Two copies of a smaller subunit One copy of a fifth subunit

Transcription (Cont.) Prokaryotes Eukaryotes RNA produced continuously No Clustering

Modification of mRNA Two pieces End pieces Introns Exons 5’ Cap Poly A-Tail

RNA Processing in Eukaryotes Figure 4-19