What Turns Off Transcription By Binding To The Operator? In molecular genetics, a repressor is a DNA- or RNA-binding protein that inhibits the expression of one or more genes by binding to the operator or associated silencers. A DNA-binding repressor blocks the attachment of RNA polymerase to the promoter, thus preventing transcription of the genes
What Are The Three Stages Of Gene Expression? Step 1: Initiation. Initiation is the beginning of transcription. … Step 2: Elongation. Elongation is the addition of nucleotides to the mRNA strand. … Step 3: Termination. What are the three levels of gene expression? transcriptional control (whether and how much a gene is transcribed into mRNA)
How Does RNA Polymerase Work? RNA polymerases are enzymes that transcribe DNA into RNA. … RNA polymerase synthesizes an RNA strand complementary to a template DNA strand. It synthesizes the RNA strand in the 5′ to 3′ direction, while reading the template DNA strand in the 3′ to 5′ direction. The template DNA strand and