Question
Asked Dec 2, 2019
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Which of the following molecules is a protein produced by a regulatory gene?

a) operon

b) inducer

c) promoter

d) repressor

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Expert Answer

Step 1

The correct answer is option (d) repressor. Repressor is a protein produced by a regulatory gene. A repressor is RNA or DNA binding protein that upon binding to an operator prevents (inhibits) the expression of one or more genes.

Step 2

Option (a) operon is not correct because operon is a set of genes that transcribed under the command of an operator gene and it is not a protein.

Step 3

Option (b) inducer is not correct because it is a molecule that regulates the expression of gene...

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