MHT CET 202625 AprilEvening Shift
- Exam
- MHT CET
- Year
- 2026
- Date
- 25 April
- Shift
- Evening Shift
- Subject
- Biology
- Chapter
- Molecular Basis of Inheritance
MHT CET 2026 · 25 April · Evening Shift · Biology · Molecular Basis of Inheritance
Match the gene in Column I with its role in Column II. Column I...
Match the gene in Column I with its role in Column II.
Choose the correct option.
| 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 |
Options
- AA-II, B-III, C-I, D-IV
- BA-III, B-I, C-II, D-IV
- CA-III, B-IV, C-I, D-II
- DA-III, B-I, C-IV, D-II
Correct answer
D. A-III, B-I, C-IV, D-II
Step-by-step 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
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