Class 12 Biology MCQ Chapter 5 Principles of Inheritances and Variation Solutions English Medium to each chapter is provided in the list so that you can easily browse through different chapters Class 12 Biology MCQ Chapter 5 Principles of Inheritances and Variation Question Answer in English and select need one. AHSEC Class 12 Biology Objective Type Question Answer As Per AHSEC New Book Syllabus Download PDF. AHSEC Biology MCQ Class 12 Solutions.
Class 12 Biology MCQ Chapter 5 Principles of Inheritances and Variation
Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. AHSEC Class 12 Biology Multiple Choice Solutions in English Medium are part of All Subject Solutions. Here we have given AHSEC Class 12 Biology MCQ Question Answer English Medium for All Chapters, You can practice these here.
Principles of Inheritances and Variation
Chapter: 5
| MCQs |
Choose the Correct Option:
1. Mendel performed hybridization experiments on garden peas for how many years?
(i) 5 years.
(ii) 7 years.
(iii) 9 years.
(iv) 3 years.
Ans: (ii) 7 years.
2. What term did Mendel use for genes?
(i) Chromosomes.
(ii) Factors.
(iii) Alleles.
(iv) Traits
Ans: (ii) Factors.
3. The genotype Tt is:
(i) Homozygous dominant.
(ii) Homozygous recessive.
(iii) Heterozygous.
(iv) None.
Ans: (iii) Heterozygous.
4. Which of the following is not a trait studied by Mendel?
(i) Pod shape.
(ii) Seed texture.
(iii) Leaf size.
(iv) Flower color.
Ans : (iii) Leaf size.
5. Which ratio is observed in the F₂ generation of a monohybrid cross?
(i) 1:2:1
(ii) 3:1
(iii) Both (i) and (ii)
(iv) 9:3:3:1
Ans: (iii) Both (i) and (ii)
6. In a test cross, the organism with dominant phenotype is crossed with:
(i) Homozygous dominant.
(ii) Homozygous recessive.
(iii) Heterozygous.
(iv) All of these.
Ans: (ii) Homozygous recessive.
7. Incomplete dominance was first studied in:
(i) Pea.
(ii) Maize.
(iii) Snapdragon.
(iv) Tomato.
Ans: (iii) Snapdragon.
8. ABO blood groups represent:
(i) Polygenic inheritance.
(ii) Multiple alleles and codominance.
(iii) Linkage.
(iv) Epistasis.
Ans: (ii) Multiple alleles and codominance.
9. Who rediscovered Mendel’s work?
(i) Morgan.
(ii) Correns, de Vries, Tschermak.
(iii) Sutton.
(iv) Boveri.
Ans: (ii) Correns, de Vries, Tschermak.
10. Chromosomal theory of inheritance was proposed by:
(i) Watson and Crick.
(ii) Mendel.
(iii) Sutton and Boveri.
(iv) Morgan.
Ans: (iii) Sutton and Boveri.
11. Which organism was used by T.H. Morgan?
(i) Honey bee.
(ii) Pea plant.
(iii) Fruit fly.
(iv) Mouse.
Ans: (iii) Fruit fly.
12. Linked genes are present on:
(i) Different chromosomes.
(ii) Same chromosome.
(iii) Centrosome.
(iv) None.
Ans: (ii) Same chromosome.
13. Crossing over occurs in:
(i) Mitosis.
(ii) Meiosis-I.
(iii) Meiosis-II.
(iv) Cytokinesis.
Ans: (ii) Meiosis-I.
14. The number of linkage groups in humans is:
(i) 23.
(ii) 46.
(iii) 22.
(iv) 24.
Ans: (i) 23.
15. Colour blindness is:
(i) Autosomal dominant.
(ii) Autosomal recessive.
(iii) X-linked recessive.
(iv) Y-linked.
Ans: (iii) X-linked recessive.
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