MCQ Questions for Class 12 Biology Chapter 5 Principles of Inheritance and Variation with Answers

MCQ Questions for Class 12 Biology Chapter 5 Principles of Inheritance and Variation with Answers Set-B 

MCQ Questions for Class12 Biology Chapter 5 Principles of Inheritance and Variation

Principles of Inheritance and Variation Class 12 Biology MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 12 Biology Chapter 5 Principles of Inheritance and Variation with Answers Pdf free download. MCQ Questions for Class 12 Biology with Answers were prepared based on the latest exam pattern. We have Provided Principles of Inheritance and Variation Class 12 Biology MCQs Questions with Answers to help students understand the concept very well.

Class 12 Biology Chapter 5 Quiz

Class 12 Biology Chapter 5 MCQ Online Test


You can refer to NCERT Solutions for Class 12 Biology Chapter 5 Principles of Inheritance and Variation to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Principles of Inheritance and Variation Class 12 Biology MCQ online test

Q1. Which of the following is incorrect regarding ZW – ZZ type of sex determination ?
A.It occurs in birds and some reptiles.
B.Females are homogametic and males are heterogametic.
C.1:1 sex ratio is produced in the offsprings.
D.All of these
Ans: Females are homogametic and males are heterogametic.
Q2. A couple has six daughters. What is the possibility of their having a girl next time ?
A.10 %
B.50 %
C.90 %
D.100 %
Ans: 50 %
Q3. Number of autosomes present in liver cells of a human female is
A.22 autosomes
B.22 pairs
C.23 autosomes
D.23 pairs
Ans: 22 pairs
Q4. Haplodiploidy is found in
A.grasshoppers and cockroaches
B.birds and reptiles
C.butterflies and moths
D.honeybees, ants and waspe.
Ans: honeybees, ants and waspe.
Q5. Rate of mutation is affected by
A.temperature
B.X-rays
C.gamma rays
D.all of these.
Ans: all of these.
Q6. Two or more independent genes present on different chromosomes which determine nearly same phenotype are called
A.supplementary genes
B.complementary genes
C.duplicate genes
D.none of these.
Ans: duplicate genes
Q7. Select the incorrect statement regarding pedigree analysis.
A.Solid symbols show unaffected individuals.
B.Proband is the person from which case history starts.
C.It is useful for genetic counsellors.
D.It is an analysis of traits in several generations of a family.
Ans: Solid symbols show unaffected individuals.
Q8. To determine the genotype of a tall plant of F2 generation, Mendel crossed this plant with a dwarf plant. This cross represents a
A.test cross
B.back cross
C.reciprocal cross
D.dihybrid cross.
Ans: test cross
Q9. Which of the following is a test cross ?
A.TT × TT
B.Tt × Tt
C.tt × tt
D.Tt × tt
Ans: Tt × tt
Q10. Mendal formulated the law of purity of gametes on the basis of
A.monohybrid cross
B.dihybrid cross
C.test cross
D.back cross.
Ans: monohybrid cross
Q11. The inheritance of flower colour in Antirrhinum (dog flower) is an example of
A.incomplete dominance
B.co-dominance
C.multiple alleles
D.linkage.
Ans: incomplete dominance
Q12. In Antirrhinum (dog flower), phenotypic ratio in F2 generation for the inheritance of flower colour would be
A.3 : 1
B.1 : 2 : 1
C.1 : 1
D.2 : 1
Ans: 1 : 2 : 1
Q13. Phenotypic and genotypic ratio is similar in case of
A.complete dominance
B.incomplete dominance
C.over dominance
D.epistasis.
Ans: incomplete dominancec
Q14. What can be the blood group of offspring when both parents have AB blood group ?
A.AB only
B.A, B and AB
C.A, B, AB and O
D.A and B only
Ans: A, B and AB
Q15. Inheritance of roan coat in cattle is an example of
A.incomplete dominance
B.codominance
C.multiple allelism
D.none of these
Ans: codominance
Q16. ABO blood grouping in human beings cites the example of
A.incomplete dominance
B.co-dominance
C.multiple allelism
D.both
Ans: and (c)
Q17. In mice, Y is the dominant allele for yellow fur an y is the recessive allele for grey fur. Since Y is lethal when homozygous, the result of cross Yy × Yy will be
A.3 yellow : 1 grey
B.2 yellow : 1 grey
C.1 yellow : 1 grey
D.1 yellow : 2 grey
Ans: 2 yellow : 1 grey
Q18. How many types of gametes can be produced by a diploid organism who is heterozygous for 4 loci ?
A.4
B.8
C.16
D.32
Ans: 16
Q19. Which of the following is correct for the condition when plant YyRr is back crossed with the double recessive parent ?
A.9 : 3 : 3 : 1 ratio of phenotypes only
B.9 : 3 : 3 : 1 ratio of genotypes only
C.1 : 1 : 1 : 1 ratio of phenotypes only
D.1 : 1 : 1 : 1 ratio of phenotypes and genotypes
Ans: 1 : 1 : 1 : 1 ratio of phenotypes and genotypes
Q20. Law of independent assortment can be explained with the help of
A.dihybrid
B.test cross
C.back cross
D.monohybrid cross
Ans: dihybrid

MCQ Questions for Class 12 Biology


NCERT Solutions for Class 12 Biology


Class 12 Biologys

NCERT Solutions for Class 12 Biology

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    MCQ Questions for Class 12 Biology Chapter 1 Reproduction in Organisms Set-C

NCERT Solutions for Class 12 Biology

    MCQ Questions for Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants Set-A
    MCQ Questions for Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants Set-B
    MCQ Questions for Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants Set-C

Class 12 Biology

    MCQ Questions for Class 12 Biology Chapter 3 Human Reproduction Set-A
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    MCQ Questions for Class 12 Biology Chapter 3 Human Reproduction Set-C
    MCQ Questions for Class 12 Biology Chapter 3 Human Reproduction Set-D

Class 12 Biology

    MCQ Questions for Class 12 Biology Chapter 4 Reproductive Health Set-A
    MCQ Questions for Class 12 Biology Chapter 4 Reproductive Health Set-B
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Class 12 Biology

    MCQ Questions for Class 12 Biology Chapter 5 Principles of Inheritance and Variation Set-A
    MCQ Questions for Class 12 Biology Chapter 5 Principles of Inheritance and Variation Set-B
    MCQ Questions for Class 12 Biology Chapter 5 Principles of Inheritance and Variation Set-C
    MCQ Questions for Class 12 Biology Chapter 5 Principles of Inheritance and Variation Set-D

Class 12 Biology

    MCQ Questions for Class 12 Biology Chapter 6 Molecular Basis of Inheritance Set-A
    MCQ Questions for Class 12 Biology Chapter 6 Molecular Basis of Inheritance Set-B
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    MCQ Questions for Class 12 Biology Chapter 6 Molecular Basis of Inheritance Set-D

Biology : Class 12

    MCQ Questions for Class 12 Biology Chapter 7 Evolution Set-A
    MCQ Questions for Class 12 Biology Chapter 7 Evolution Set-B
    MCQ Questions for Class 12 Biology Chapter 7 Evolution Set-C
    MCQ Questions for Class 12 Biology Chapter 7 Evolution Set-D

Biology : Class 12

    MCQ Questions for Class 12 Biology Chapter 8 Human Health and Disease Set-A
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    MCQ Questions for Class 12 Biology Chapter 8 Human Health and Disease Set-C
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NCERT Biology Class 12

    MCQ Questions for Class 12 Biology Chapter 9 Strategies for Enhancement in Food Production Set-A
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    MCQ Questions for Class 12 Biology Chapter 9 Strategies for Enhancement in Food Production Set-D

NCERT Biology Class 12

    MCQ Questions for Class 12 Biology Chapter 10 Microbes in Human Welfare Set-A
    MCQ Questions for Class 12 Biology Chapter 10 Microbes in Human Welfare Set-B
    MCQ Questions for Class 12 Biology Chapter 10 Microbes in Human Welfare Set-C

NCERT Bio Class 12

    MCQ Questions for Class 12 Biology Chapter 11 Biotechnology: Principles and Processes Set-A
    MCQ Questions for Class 12 Biology Chapter 11 Biotechnology: Principles and Processes Set-B

NCERT Bio Class 12

    MCQ Questions for Class 12 Biology Chapter 12 Biotechnology and its Applications Set-A
    MCQ Questions for Class 12 Biology Chapter 12 Biotechnology and its Applications Set-B
    MCQ Questions for Class 12 Biology Chapter 12 Biotechnology and its Applications Set-C

12th NCERT Biology

    MCQ Questions for Class 12 Biology Chapter 13 Organisms and Populations Set-A
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12th NCERT Biology

    MCQ Questions for Class 12 Biology Chapter 14 Ecosystem Set-A
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    MCQ Questions for Class 12 Biology Chapter 14 Ecosystem Set-C

Class 12 Biology Chapters

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Class 12 Biology Chapters

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      NCERT SOLUTIONS FOR CLASS 12

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