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In the lac operon, the i gene codes for which protein?
A{'text': 'Repressor', 'label': 'A'}
B{'text': 'Permease', 'label': 'B'}
C{'text': 'Beta-galactosidase', 'label': 'C'}
D{'text': 'Transacetylase', 'label': 'D'}
Answer & Solution
Correct answer: A. {'text': 'Repressor', 'label': 'A'}
The i gene constitutively produces the lac repressor, which binds the operator and blocks RNA polymerase from transcribing z, y and a in the absence of lactose.
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