You are studying a set of mouse genes whose expression increases when cells are exposed to the hormone cortisol, and you believe that the same cortisol-responsive transcriptional activator regulates all of these genes

Which of the following statements below should be true if your hypothesis is correct?
(a) The cortisol-responsive genes share a DNA sequence in their regulatory regions that binds the cortisol-responsive transcriptional activator.
(b) The cortisol-responsive genes must all be in an operon.
(c) The transcriptional regulators that bind to the regulatory regions of the cortisol-responsive genes must all be the same.
(d) The cortisol-responsive genes must not be transcribed in response to other hormones.


(a)

Biology & Microbiology

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