The result obtained in Jacob and Monod's merodiploid analysis that suggested the lacO region acts in cis to regulate the lac operon was:

A. a nonfunctional lacI mutant is rescued by a wild-type lacI allele.
B. a nonfunctional lacI mutant cannot be rescued by a wild-type lacI allele.
C. a nonfunctional lacO mutant is rescued by a wild-type lacO allele.
D. a nonfunctional lacO mutant cannot be rescued by a wild-type lacO allele.


D

Biology & Microbiology

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