Single Choice

All of the following are part of an operon except

AAn enhancer
Correct Answer
BAn operator
CA promoter
DStructural genes

Solution

Enhancer sequences are regulatory DNA sequences. This sequences are bound by specific proteins called transcription factors. The binding of these proteins will enhance the transcription of an associated gene. They are not the part of the operon structure.
So, the correct answer is option A

SIMILAR QUESTIONS

Genetics

Which of the following is required as inducer(s) for the expression of Lac operon?

Genetics

Gene regulation governing lactose operon of E.coli that involves the lac I gene product is

Genetics

In the lac operon model, lactose molecules function as

Genetics

In the medium where E. coli was growing, lactose was added, which induced the lac operon. Then, why does lac operon shut down sometime after addition of lactose in the medium?

Genetics

Choose the correct answer from the alternatives given : The sequence of structural genes in lac operon is

Genetics

Choose the correct answer from the alternatives given : In E. Coli, the lac operon gets switched on when

Genetics

Choose the correct answer from the alternatives given : In E. Coli, the lac operon gets switched on when

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