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Central Dogma

Considering l...

Question

Considering lac operon, match the following:

$\begin{matrix} C o l u m n I & C o l u m n I I p . R e g u l a t o r g e n e & i . B i n d i n g s i t e f o r r e p r e s s o r p r o t e i n q . O p e r t o r g e n e & i . C o d e (s) f o r t h e p r o t e i n o f t h e e n z y m e s r . P r o m o t e r g e n e & i i i . C o d e (s) f o r r e p r e s s o r p r o t e i n s . S t r u c t u r a l g e n e s & i v . B i n d i n g S i t e f o r R N A p o l y m e r a s e \end{matrix}$

A

p-ii, q-i, r-iii, s-iv

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B

p-iii, q-i, r-iv, s-ii

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C

p-iii, q-iv, r-i, s-ii

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D

P-iv, q-i, r-ii, s-iii

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Solution

The correct option is B p-iii, q-i, r-iv, s-ii
The regulator gene codes for the repressor protein, while the operator serves as the binding site for this repressor. The promoter is where RNA polymerase binds to, when transcription needs to happen. The structural genes code for the proteins which make up the enzymes needed to digest lactose.

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