What Is the Difference Between a Gene That Is Derepressed

question 18

Multiple Choice

What is the difference between a gene that is derepressed and one that is induced?

• A)A gene that is derepressed is turned on because a repressor protein is not bound without its cofactor.By comparison,a gene that is induced is turned on because an inducer molecule prevents binding of the repressor.
• B)Genes that are derepressed are turned on because an inducer molecule is present.By comparison,a gene that is induced is turned on because a repressor protein is bound to the operator.
• C)There is no difference between a gene that is derepressed and one that is induced.
• D)A derepressed gene is turned off and an induced gene is activated to be expressed.

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