MCQs for Up Bsc Nursing CNET ABVMU
1. In Mendel’s experiments on pea plants, the trait that disappeared in the F1 generation but reappeared in the F2 generation is called:
a) Dominant trait
b) Recessive trait
c) Co-dominant trait
d) Linked trait
2. The term “homozygous” refers to an individual that has:
a) Two different alleles for a particular gene
b) Two identical alleles for a particular gene
c) Multiple alleles for a particular gene
d) No alleles for a particular gene
3. The genetic makeup of an individual is referred to as its:
a) Phenotype
b) Genotype
c) Allele
d) Homozygosity
4. The observed physical characteristics of an individual are referred to as its:
a) Genotype
b) Phenotype
c) Allele
d) Dominance
5. Which of the following is an example of a sex-linked inheritance?
a) Blood type
b) Eye color
c) Height
d) Color blindness
6. The inheritance of traits controlled by a single gene with two or more alleles is called:
a) Incomplete dominance
b) Co-dominance
c) Multiple alleles
d) Polygenic inheritance
7. A gene located on the X-chromosome is called a/an:
a) Autosomal gene
b) Recessive gene
c) Dominant gene
d) Sex-linked gene
8. In a dihybrid cross, if the two genes assort independently, the phenotypic ratio in the F2 generation will be:
a) 3:1
b) 1:2:1
c) 9:3:3:1
d) 1:1
9. The phenomenon where a single gene influences multiple traits is called:
a) Incomplete dominance
b) Co-dominance
c) Pleiotropy
d) Polygenic inheritance
10. In humans, the inheritance of ABO blood groups follows the pattern of:
a) Complete dominance
b) Incomplete dominance
c) Co-dominance
d) Multiple alleles
11. The inheritance of skin color in humans is an example of:
a) Complete dominance
b) Incomplete dominance
c) Co-dominance
d) Polygenic inheritance
12. The presence of an additional copy of a chromosome in a cell is known as:
a) Polyploidy
b) Aneuploidy
c) Deletion
d) Duplication
13. Down syndrome, caused by an extra copy of chromosome 21, is an example of:
a) Polyploidy
b) Aneuploidy
c) Deletion
d) Duplication
14. The process of exchange of genetic material between homologous chromosomes during meiosis is called:
a) Crossing over
b) Inversion
c) Translocation
d) Nondisjunction
Answer Key
1. b) Recessive trait
2. b) Two identical alleles for a particular gene
3. b) Genotype
4. b) Phenotype
5. d) Color blindness
6. c) Multiple alleles
7. d) Sex-linked gene
8. c) 9:3:3:1
9. c) Pleiotropy
10. c) Co-dominance
11. d) Polygenic inheritance
12. b) Aneuploidy
13. b) Aneuploidy
14. a) Crossing over
| Chapter Name | Chapter Link |
|---|---|
| Sexual Reproduction in Flowering Plants | Link |
| Human Reproduction | Link |
| Reproductive Health | Link |
| Principles of Inheritance and Variation | Link |
| Molecular Basis Of Inheritance | Link |
| Evolution | Link |
| Human Health and Disease | Link |
| Microbes in Human Welfare | Link |
| Biotechnology : Principles and Process | Link |
| Biotechnology and its Applications | Link |
| Organism And Population | Link |
| Ecosystem | Link |
| Biodiversity and Conservation | Link |
