Prac Ex2 - PRACTICE EXAM #2 Question 1. (1) What is the...

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1 PRACTICE EXAM #2 Question 1. (1) What is the experimental evidence that has led scientists to believe that the simple On/Off switch provided by the trp repressor/tryptophan combination is not enough to fully regulate the expression of the trp operon (you only need 2-3 sentences; listing irrelevant information will cause a deduction of points)? (2) What’s the experimental evidence that has led scientists to believe that the simple On/Off switch by the LacI/lactose combination is not enough to fully regulate the lac operon gene expression (you only need 2-3 sentences; listing irrelevant observations will cause a deduction of points)? (3) During the eukaryotic transcription cycle, it is known that TFIID, IIA, and IIB are left behind at the promoter region even after the departure of RNA polymerase II. What could be the benefit of such an arrangement to the overall transcription process? Question 2.
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Prac Ex2 - PRACTICE EXAM #2 Question 1. (1) What is the...

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