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In E.coli, the lac operon gets switched ...

In E.coli, the lac operon gets switched on when :

A

Lactose is present and it binds to re- pressor

B

Repressor binds to operator

C

RNA polymerase binds to the operator

D

Lactose is present and it binds to RNA polymerase

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The correct Answer is:
a
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  18. The amino acid attaches to the tRNA at its :

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