During an internship at the National Institute of Health, Rupert is asked to examine regulation of the lac operon of E. coli under 4 different conditions. Rupert has forgotten what he learned in Genetics lab, so has called you for help. Using the chart below, determine if Rupert should expect: a. the repressor protein () to be bound to the operator preventing expression
b. the cAMP to be high or low
c. lacZ to be expressed
d. level of lacZ expression
Repressor CAMP leve Lacz Bound (YN) (High/Low expressed (High/Low/None) LacZ level (YN)
-Glucose
-Lactose
-Glucose
+Lactose
+Glucose
+Lactose
+Glucose
Lactose