In the first step of their experiments,Jacob and Monod treated E.coli cells with UV light or X-rays in order to
A)decrease the number of viable cells.
B)induce DNA repair enzymes.
C)increase the frequency of mutations in all genes.
D)selectively mutate the lac operon,leaving all other genes unmutated.

Question

Quizplus · Accepted Answer

Jacob and Monod used UV light or X-rays to increase the frequency of mutations in all genes, which allowed them to study the effects of mutations on the lac operon and other genetic elements.

In the First Step of Their Experiments,Jacob and Monod Treated