Q: The Lac operon contains three genes; Lac A, Lac Z, and Lac Y. A promoter lies upstream of the three genes. When IPTG, an inducer of the lac operon, indirectly exposes the promoter, which of the operon genes will be transcribed?
A		none; only genes immediately adjacent to the promoter will be transcribed
B		the first gene in the operon; all genes are controlled by their own individual promoters
C		none; promoters do not control the transcription of genes on operons, only standalone genes
D		all; all genes within a single operon are transcribed as a unit, as initiated by a single promoter

Genetic Code, Transcription, Translation | Prokaryotes |