Match List-I with List-II:
Choose the correct answer from the options given below:
सूची-I को सूची-II के साथ सुमेलित कीजिए:
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए:
|
List - I
|
List - II
|
||
|---|---|---|---|
| A | Promoter प्रमोटर | I | Produces repressor protein दमनकारी प्रोटीन का उत्पादन करता है |
| B | Operator ऑपरेटर | II | Site where repressor binds वह स्थल जहाँ दमनकारी बंधता है |
| C | Structural gene संरचनात्मक जीन | III | Code for functional proteins कार्यात्मक प्रोटीनों के लिए कूटबद्ध करता है |
| D | Regulatory gene नियामक जीन | IV | Binding site for RNA polymerase आरएनए पोलीमरेज़ के लिए बंधन स्थल |
EXPLANATION
Crop Botany, Geography & Agronomy
Functional Components of a Bacterial Operon:
- Promoter $\rightarrow$ (IV). Binding site for RNA polymerase: The DNA sequence upstream of the transcription initiation site where RNA polymerase holoenzyme recognizes and binds to begin transcription.
- Operator $\rightarrow$ (II). Site where repressor binds: The regulatory DNA segment situated between the promoter and structural genes that physically interacts with the repressor protein to block or permit RNA polymerase transit.
- Structural gene $\rightarrow$ (III). Code for functional proteins: The cistronic reading frames (lacZ, lacY, lacA) that transcribe polycistronic mRNA translating into functional enzymes.
- Regulatory gene (lacI) $\rightarrow$ (I). Produces repressor protein: Constitutively transcribed gene encoding the lac repressor protein.
Matching sequence: (A) - (IV), (B) - (II), (C) - (III), (D) - (I).
Correct Answer: Option 1.
विस्तृत व्याख्या:
Functional Components of a Bacterial Operon (ऑपेरॉन के घटक एवं कार्य):
- Promoter $\rightarrow$ (IV). Binding site for RNA polymerase: The DNA sequence upstream of the transcription initiation site where RNA polymerase holoenzyme recognizes and binds to begin transcription.
- Operator $\rightarrow$ (II). Site where repressor binds: The regulatory DNA segment situated between the promoter and structural genes that physically interacts with the repressor protein to block or permit RNA polymerase transit.
- Structural gene $\rightarrow$ (III). Code for functional proteins: The cistronic reading frames (lacZ, lacY, lacA) that transcribe polycistronic mRNA translating into functional enzymes.
- Regulatory gene (lacI) $\rightarrow$ (I). Produces repressor protein: Constitutively transcribed gene encoding the lac repressor protein.
Matching sequence: (A) - (IV), (B) - (II), (C) - (III), (D) - (I).
Correct Answer: Option 1.
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