CBSE Class 12 Principles of Inheritance and Variation Multiple Choice Questions with Answers. MCQ Questions Class 12 Principles of Inheritance and Variation with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT MCQ questions Class 12 Principles of Inheritance and Variation with Answers to know their preparation level.
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MCQ Questions Class 12 Principles of Inheritance and Variation with Answers - Set - 3
Question 1:
Skin colour is controlled by
a) Pleiotropic genes
b) Dominant genes
c) Polygenes
d) Recessive gene
Correct Answer – (C)
Question 2:
The plant in which Hugo de Vries introduces the concept of mutation is
a) Oenothera lamarkiana
b) Pisum sativum
c) Allium cepa
d) Mirabilis jalapa
Correct Answer – (A)
Question 3:
HbA and HbS alleles of normal and sickle cell haemoglobin are
a) Co-dominant alleles
b) Multiple alleles
c) Dominant-recessive alleles
d) Cumulative alleles
Correct Answer – (C)
Question 4:
Segregation of genes occurs in
a) Embryo formation
b) Anaphase II
c) Anaphase I
d) Metaphase II
Correct Answer – (C)
Question 5:
Which one is an example for chromosomal mutation
a) Sickle cell anemia
b) Muscular dystrophy
c) Phenylketoneuria
d) Klinefelter’s syndrome
Correct Answer – (D)
MCQ Questions Class 12 Principles of Inheritance and Variation With Answers
Question 6:
In Snapdragon two plants with pink flowers were hybridized. The F1 plants produced red, pink and white flowers in the proportion of 1 red, 2 pink and 1 white. What could be the genotype of the two plants used for hybridization? Red flower colour is determined by RR and white by rr genes.
a) Rr
b) rr
c) rrr
d) RR
Correct Answer – (A)
Question 8:
Child has blood group “O” and his father is “B” type. Then genotype of the father should be
a) IBIB
b) IBIO
c) IAIB
d) IOIO
Correct Answer – (B)
Question 9:
Indicate, the inheritance of which of the following is controlled by multiple alleles
a) Colour blindness
b) Sickle cell anemia
c) Blood group
d) Phenylketoneuria
Correct Answer – (C)
Question 10:
X – linked recessive gene is
a) Always expressed in male
b) Always expressed in female
c) Never expressed in males
d) Always expressed in males and female
Correct Answer – (A)
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