regulation of gene expression

Question 1

what are the 4 major components of an operon ?

Answer 1

Regulatory gene
Promoter region
operator region
structural genes

Question 2

regulatory gene

Answer 2

produces a repressor protein that prevents gene expression by blocking the action of RNA polymerase

Question 3

promoter region

Answer 3

RNA polymerase attatches to this region to begin transcription

Question 4

operator region

Answer 4

can block the action of RNA polymerase if the region is occupied by a repressor protein

Question 5

structual genes

Answer 5

DNA sequences that code for several related enzymes that direct the production of some particular end product