MCQ on Genetics (Basics: Class 10)

Genetics is the study of heredity, genes, and variations passed from one generation to another. It explores DNA, inheritance patterns, traits, mutations, and genetic mechanisms shaping the development, diversity, and characteristics of organisms within populations and species. This MCQ on Genetics Class 10 will help you to understand the very basics of genetics.

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1. 
Which of the following is the basic unit of heredity?

2. 
What is the term for the different forms of a gene?

3. 
A genotype refers to:

4. 
Mendel’s law of segregation refers to:

5. 
Which of the following represents the genotype for a homozygous recessive individual?

6. 
In humans, the sex chromosomes for males are:

7. 
What is the term for the physical appearance of an organism?

8. 
A Punnett square is used to:

9. 
Which genetic disorder is caused by an extra chromosome 21?

10. 
If an individual is heterozygous for a trait, what is the probability of passing on the dominant allele to its offspring?

11. 
The process of transferring genetic information from DNA to mRNA is known as:

12. 
Which of the following represents a sex-linked trait?

13. 
The DNA molecule is composed of subunits called:

14. 
Which of Mendel's laws states that alleles segregate independently during gamete formation?

15. 
What is the term for the observable characteristics resulting from the interaction of a genotype with the environment?

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MCQ on Genetics Class 10




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