MCQ ON TYPES OF GENES class 12 for NEET

MCQ ON TYPES OF GENES class 12 for NEET | THE TYPES OF GENES class 12 | MCQ TYPES OF GENES with Answer | Check the below NCERT MCQ question for class 12 Biology based on the with Answers.

MCQ on TYPES OF GENES class 12 Biology with answers were prepared based on the latest pattern. We have provided class 12 Biology MCQs questions on TYPES OF GENES with Answers to help students understand the concept very well.

MCQ ON TYPES OF GENES is useful for NEET / CSIR / UGC / CBSE / ICSE / AIIMS / EXAM / AFMC EXAM / STATE LEVEL MEDICAL EXAM 2022-23, 2023-24

Introduction:
Gene is a unit of inheritance. gene is made of DNA ,RNA and proteins. Gene expression is regulated. A gene can be structural or regulator. Regulator genes controls the functioning of structural gene like promoter, operator and regulator genes.
Structural gene of produces a biochemical required for cellular machinery.

MCQ ON TYPES OF GENES class 12 for NEET

1. The gene which controls the functioning of a structural genes

(a) Regulatory gene
(b) structural gene
(c)house keeping gene
(d) inducible gene

Ans (a) regulatory gene

2. The gene one which produces a biochemical required for cellular machinery -tRNA ,r- RNA ,mRNA .

(a) regulatory gene
(b) structural gene
(c) transponse
(d) repressible gene
Ans. (b) structural gene

3.The gene which are always in action because their products are always required for cellular activities.

(a) House-keeping gene
(b) regulatory gene
(c) structural gene
(d) all the above

Ans. (b) House-keeping gene

4. The genes which can be switched off or on as per requirement.

(a) house-keeping gene
(b) structural gene
(c) regulatory gene
(d) nonconstitutive gene

Ans.(d) nonconstitutive gene

5.The gene having more than one copy in the same genome are called

(a) inducers
(b) repressible
(c) repeated genes
(d) house- keeping gene

Ans.(c) repeated genes

6. The gene which is a group of nearly similar genes which produce tissue and time specific products.

(a) multigenes
(b) pseudogenes
(c) House-keeping gene
(d) transposons

Ans.(a) multigenes

7. Non-functional genes are

(a) true gene
(b) pseudogenes
(c) cryptic gene
(d) all the above

Ans.(b) pseudogenes

8.The genes which are not expressed during life cycle of an organism.

(a) pseudogenes
(b) House-keeping gene
(c) cryptic gene
(d) transponse

Ans.(c) Cryptic gene

9. Jumping genes are

(a) transposase
(b) Cryptic gene
(c) pseudogenes
(d) multigenes

Ans. (a) transponsase

10. Jumping gene discovered by

(a) Mc Clintock
(b) Khurana
(c) Morgan
(d) Mendel

Ans. (a) Mc Clintock

11. Western blot used for

(a) proteins
(b)DNA
(c) RBA
(d) all the above

Ans.(a) proteins

12.Southern blot used for

(a) DNA
(b) RNA
(c) proteins
(d) fats

Ans . (a) DNA

13.Northern blot used for

(a) DNA
(b) RNA
(c) regulatory gene
(d) proteins

Ans.(b) RNA

15. Introns are

(a) spacer DNA
(b) mRNA
(c) tRNA
(d) all the above

Ans. (a) Spacer DNA

16. Nonspilit genes

(a) exons
(b) introns
(c) House-keeping gene
(d) none of the above

Ans.(a) exons

17. Promotes gene lacks

(a) prompters
(b) exons
(c) both a and b
(d) introns

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16. tRNA has functions of

Ans.(c) both a and b

18. Processes genes are found to be formed by

(a) transcriptase
(b) reverse transcriptions
(c) mtRNA
(d) rRNA

And.(b) reverse transcriptions

19. The gene which remain repressible but are switched on in the presence of inducer chemical.

(a) inducer gene
(b) repressible gene
(c) regulatory gene
(d) none of the above

Ans. (a) inducer gene

20.The gene which is remain active till switched off by a chemical.

(a) repressible gene
(b) inducer gene
(c) regulatory gene
(d) all the above

Ans.(a) repressible gene

21.The functional eukaryotic mRNA is formed by

(a) splicing
(b) introns
(c) rRNA
(d) None of the above

Ans. (a) splicing

22. The most common human transposons is

(a) Alu family
(b) tRNA
(c) rRNA
(d) cataytic RNA
Ans.(a) Alu family