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12 February, 13:56

Suppose an experimenter moves DNA sequences within a prokaryotic genome and puts the operator to the far end of the operon, past the last structural gene [lac A], which of the following processes would likely occur when the cell is exposed to lactose Group of answer choices The inducer will no longer bind to the repressor. The operon will never be transcribed. The genes of the lac operon will be transcribed continuously. The repressor will no longer bind to the operator.

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  1. 12 February, 15:49
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    The genes of the lac operon will be transcribed continuously

    Explanation:

    The operator is a sequence in the DNA which binds a repressor protein. THe operator is located upstream ('before') the structural genes of the operon.

    When this repressor is bound to the operator it blocks the RNA polymerase from transcribing the structural genes.

    If the operator is moved downstream (to the far end) of the operon, past the last structural gene, the repressor will stop being an obstacle for transcription and the RNA polymerase will always be able to transcribe the structural genes.
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