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5.Molecular Basis of Inheritance
medium
In the lac operon, the structural genes are switched off when
A
Repressor binds to operator
B
Repressor binds to promotor
C
Repressor binds to regular
D
Repressor binds to inducer
Solution
(a)A short sequence of $DNA$ where the repressor binds preventing $RNA$ polymerase from attaching to the promoter this is called on/off switch of transcription.
Standard 12
Biology
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