Assignment task: What would you expect to observe (regarding the expression of genes in the lac operon) when glucose and lactose are absent? (READ THESE CAREFULLY - they are very similar) Group of answer choices
a. The operon will be turned on at a low level as the repressor protein (LacI) will not be bound to the DNA, but the cAMP-CAP will not promote transcription.
b. The operon will be turned off as the repressor protein (LacI) will be bound to the DNA despite the cAMP-CAP binding to promote transcription.
c. It is impossible to say without knowing whether the mRNA can form secondary structures that help to regulate transcription.
d. The operon will be turned off as the repressor protein (LacI) will be bound to the DNA, and the cAMP-CAP will not promote transcription.
e. The operon will be turned on to the fullest extent as the repressor protein (LacI) will not be bound to the DNA, and the cAMP-CAP will bind to the DNA to promote transcription.