Biology - Molecular Basis of Inheritance Question with Solution | TestHub
BiologyMolecular Basis of InheritanceRegulation of Gene ExpressionMedium2 minPYQ_2026
BiologyMediumsingle choice
Match the gene in Column I with its role in Column II.
| Column I (Gene) | Column II (Role of gene) |
|---|---|
| (A) Structural gene | (I) Binding site for repressor |
| (B) Operator gene | (II) Codes for repressor |
| (C) Promoter gene | (III) Codes for enzyme |
| (D) Regulator gene | (IV) Binding site for RNA polymerase |
Choose the correct option.
Options:
Answer:
D
Solution:
The structural gene codes for the enzymes required for the metabolic pathway.
The operator gene serves as the binding site for the repressor protein, which regulates the transcription of the structural genes.
The promoter gene is the specific DNA sequence where RNA polymerase binds to initiate transcription.
The regulator gene codes for the repressor protein that binds to the operator region.
Therefore, the correct matching is A-III, B-I, C-IV, D-II.
Answer: A-III, B-I, C-IV, D-II
Stream:MHT_CET_MEDICALSubject:BiologyTopic:Molecular Basis of InheritanceSubtopic:Regulation of Gene Expression
⏱ 2mℹ️ Source: PYQ_2026
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