Principles of Inheritance and Variation MCQ

Principles of Inheritance and Variation MCQ can help students evaluate their knowledge of genetics, principle of inheritance and variation. Answers are also given for principle of inheritance and variation MCQ to help you remember. Try our principle of inheritance and variation MCQ to see if you can get all the answers right for the questions below.

Principles of Inheritance and Variation MCQ

Characters are passed down from parent to progeny through the process of inheritance. It is the foundation of heredity. The degree to which progeny differ from their parents is referred to as variation. Individuals belonging to the same species may differ in terms of morphology, physiology, cytology, and behavioural traits.

Principle of Inheritance and Variation MCQ

1. When a hybrid expresses a character, it is referred to as?

a. Epistasis

b. Dominant

c. Co-dominant

d. Recessive

2. A plant with the genotype AABbCC will produce — different types of gametes.

a. 5

b. 4

c. 3

d. 2

3. Colour blindness is a _________ linked recessive trait

a. Z chromosome

b. Y chromosome

c. X chromosome

d. None of the above

4. In most species, mitochondrial DNA is passed down through?

a. DNA

b. Mother and Father

c. Father

d. Mother

5. In plants, where are the genes for cytoplasmic male sterility located?

a. Chloroplast genome

b. Mitochondrial genome

c. Cytosome

d. None of the above

6. ———– trait is one whose phenotype is influenced by more than one gene.

a. Oncogenic Trait

b. Monogenic trait

c. Polygenic trait

d. None of the above

7. An individual’s collection of genes is called ______

a. Genotype

b. Phenotype

c. Trait

d. None of the above

8. A trait that “overpowers” and conceals another trait is referred to as?

a. Overpowering trait

b. Complex trait

c. Recessive trait

d. Dominant Trait

9. Why is haemophilia a disease that affects more men than women?

a. Both (2) and (3)

b. The disease is Y- linked

c. The disease is X- linked

d. None of the above

10. The ZZ/ZW sex determination is seen in?

a. Platypus

b. Snails

c. Cockroach

d. Peacock

11. Which of the following will not result in differences between siblings?

a. Independent assortment of genes

b. Crossing over

c. Linkage

d. Mutation

12. Single gene may occasionally express more than one effect. This is known as?

a. Multiple allelism

b. Mosaicism

c. Pleiotropy

d. Polygeny

13. ————– Mendel studied pairs of contrasting traits in the pea plant?

a. 6

b. 7

c. 8

d. 10

14. Mendel did not select which of the following characters?

a. Pod shape

b. Pod colour

c. Location of flower

d. Location of pod

15. Genes that code for two opposing traits are referred to as?

a. Dominant genes

b. Alleles

c. Linked genes

d. None of these

Answer Key

Principles of Inheritance and Variation MCQ

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