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9 September, 22:47

In most bacterial operons, such as the lac operon, which of the following DNA segments is responsible for controlling whether the operon is off or on?

a. lacY gene.

b. Promoter

c. Operator

d. Repressor

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  1. 10 September, 02:18
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    The answer is C. An operator is a DNA segment which the repressor binds to. The control of the operon can either be negative or positive through induction or repression. Therefore, with the use of the operator, repressors would be able to regulate its expression.
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