NEET PYQs for Regulation of Gene Expression with Solutions: Practice NEET Previous Year Questions

Updated on - Jan 19, 2026

Regulation of Gene Expression is an important topic in the Biology section in NEET exam. Practising this topic will increase your score overall and make your conceptual grip on NEET exam stronger.

This article gives you a full set of NEET PYQs for Regulation of Gene Expression with explanations for effective preparation. Practice of NEET Biology PYQs including Regulation of Gene Expression questions regularly will improve accuracy, speed, and confidence in the NEET 2026 exam.

NEET PYQs for Regulation of Gene Expression with Solutions

1.
Spliceosomes are not found in cells of
- Fungi
- Animals
- Bacteria
- Plants
View Solution
2.
Which one of the following is wrongly matched?
- Translation - Using information in m-RNA to make protein
- Repressor protein - Binds to operator to stop enzyme synthesis
- Operon - Structural genes, operator and promoter
- Transcription - Writing information from DNA to t-RNA
View Solution
3.
The specific palindromic sequence which is recognized by EcoRI is:
- 5'-GAATTC-3' 3'- CTTAAG-5'
- 5'-GGAACC-3' 3' CCTTGG - 5'
- 5'- CTTAAG-3' 3'- GAATTC-5'
- 5'-GGATCC-3' 3'- CCTAGG - 5'
View Solution
4.
Select the correct match :
- Alec Jeffreys - Streptococcus pneumoniae
- Matthew Meselson and F. Stahl – Pisum sativum
- Alfred Hershey and Martha Chase – TMV
- Francois Jacob and Jacques Monod – Lac operon
View Solution
5.
All of the following are part of an operon except
- an operator
- an enhancer
- structural genes
- a promoter
View Solution
6.
In an E. coli strain the i gene gets mutated and its product can not bind the inducer molecule. If the growth medium is provided with lactose, what will be the outcome?
- Only z gene will get transcribed
- z, y, a genes will be transcribed
- z, y, a genes will not be translated
- RNA polymerase will bind the promoter region
View Solution
7.
AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA ?
- AGGUAUCGCAU
- ACCUAUGCGAU
- UGGTUTCGCAT
- UCCAUAGCGUA
View Solution

8.
Match List I with List II:
List I List II
A Two or more alternative forms of a gene I Back cross
B Cross of F₁progeny with homozygous recessive parent II Ploidy
C Cross of F progeny with any of the parents III Allele
D Number of chromosome sets in plant IV Test cross

Choose the correct answer from the options given below:

List I	List II
A	Two or more alternative forms of a gene	I	Back cross
B	Cross of F₁progeny with homozygous recessive parent	II	Ploidy
C	Cross of F progeny with any of the parents	III	Allele
D	Number of chromosome sets in plant	IV	Test cross

A-I, B-II, C-III, D-IV
A-II, B-I, C-III, D-IV
A-III, B-IV, C-I, D-II
A-IV, B-III, C-II, D-I

View Solution

9.
Which enzyme/s will be produced in a cell in which there is a nonsense mutation in the lac Y gene ?
- β-galactosidase
- Lactose permease
- Transacetylase
- Lactose permease and transacetylase
View Solution
10.
Match the following with respect to meiosis:
Column I Column II
A Bt cotton I Gene therapy
B Adenosine II Cellular defence deaminase deficiency
C RNAi III Detection of HIV infection
D PCR IV Bacillus thuringiensis
- (a)- (iv)(b)- (i)(c)- (ii)(d)- (iii)
- (a)-(iii)(b)-(ii) (c)-(i) (d)-(iv)
- (a)-(iii) (b)-(iii) (c)-(iv) (d)-(i)
- (a)-(i) (b)-(ii) (c)-(iii) (d)-(IV)
View Solution

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	Column I		Column II
A	Bt cotton	I	Gene therapy
B	Adenosine	II	Cellular defence deaminase deficiency
C	RNAi	III	Detection of HIV infection
D	PCR	IV	Bacillus thuringiensis

NEET PYQs for Regulation of Gene Expression with Solutions

1.Spliceosomes are not found in cells of

2.Which one of the following is wrongly matched?

3.The specific palindromic sequence which is recognized by EcoRI is:

4.Select the correct match :

5.All of the following are part of an operon except

6.In an E. coli strain the i gene gets mutated and its product can not bind the inducer molecule. If the growth medium is provided with lactose, what will be the outcome?

7.AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA ?

9.Which enzyme/s will be produced in a cell in which there is a nonsense mutation in the lac Y gene ?

10.Match the following with respect to meiosis: Column I Column IIABt cotton IGene therapy BAdenosineIICellular defence deaminase deficiency CRNAiIIIDetection of HIV infectionDPCRIVBacillus thuringiensis

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1.
Spliceosomes are not found in cells of

2.
Which one of the following is wrongly matched?

3.
The specific palindromic sequence which is recognized by EcoRI is:

4.
Select the correct match :

5.
All of the following are part of an operon except

6.
In an E. coli strain the i gene gets mutated and its product can not bind the inducer molecule. If the growth medium is provided with lactose, what will be the outcome?

7.
AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA ?

9.
Which enzyme/s will be produced in a cell in which there is a nonsense mutation in the lac Y gene ?

10.
Match the following with respect to meiosis:
Column I Column II
A Bt cotton I Gene therapy
B Adenosine II Cellular defence deaminase deficiency
C RNAi III Detection of HIV infection
D PCR IV Bacillus thuringiensis