If you wished to study the SOS response in Escherichia coli, which of the following experimental procedures could be used? 

A. Transfer log phase cells from complete medium to thymine minimal medium.
B. Inactivate genes that encode DNA polymerases.
C. Expose cells to nonionizing radiation for 20 minutes.
D. Expose cells to ionizing radiation for 10 minutes.
E. All of the choices are correct.


Answer: E

Biology & Microbiology

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