Question Paper
Class / Subject: Class 10 (ICSE) · Biology
Chapter: Chapter 2 — Chapter 2: Genetics - Some Basic Fundamentals
Time Allowed: 32 minutes
Max Marks: 16
1. What does the Law of Dominance state? [1]
(A) Dominant allele masks the recessive allele
(B) Both alleles express equally always
(C) Recessive always dominates
(D) No masking occurs
2. What does the Law of Segregation state? [1]
(A) Allele pairs separate during gamete formation
(B) Alleles never separate
(C) Only dominant alleles form gametes
(D) Genes combine randomly, no rule
3. What is a genotype? [1]
(A) The genetic makeup of an organism (e.g., Tt)
(B) The physical appearance only
(C) A type of cell
(D) A type of chromosome
4. What is a phenotype? [1]
(A) The physical expression of a genotype (e.g., tall)
(B) The genetic makeup only
(C) A type of cell
(D) A type of chromosome
5. What is a Punnett square used for? [1]
(A) Predicting offspring genotype/phenotype probabilities
(B) Drawing cells
(C) Measuring height
(D) Testing chemicals
6. Who established the fundamental laws of genetics? [1]
(A) Mendel
(B) Darwin
(C) Newton
(D) Einstein
7. In genotype Tt, which allele is typically dominant? [1]
(A) T (capital letter)
(B) t (lowercase letter)
(C) Both equally
(D) Neither
8. Why study genetics fundamentals? [1]
(A) To understand heredity and variation
(B) No reason
(C) It's not useful
(D) Only for tests
9. What does the Law of Dominance state? [1]
(A) Dominant allele masks the recessive allele
(B) Both alleles express equally always
(C) Recessive always dominates
(D) No masking occurs
10. What does the Law of Segregation state? [1]
(A) Allele pairs separate during gamete formation
(B) Alleles never separate
(C) Only dominant alleles form gametes
(D) Genes combine randomly, no rule
11. What is a genotype? [1]
(A) The genetic makeup of an organism (e.g., Tt)
(B) The physical appearance only
(C) A type of cell
(D) A type of chromosome
12. What is a phenotype? [1]
(A) The physical expression of a genotype (e.g., tall)
(B) The genetic makeup only
(C) A type of cell
(D) A type of chromosome
13. What is a Punnett square used for? [1]
(A) Predicting offspring genotype/phenotype probabilities
(B) Drawing cells
(C) Measuring height
(D) Testing chemicals
14. Who established the fundamental laws of genetics? [1]
(A) Mendel
(B) Darwin
(C) Newton
(D) Einstein
15. In genotype Tt, which allele is typically dominant? [1]
(A) T (capital letter)
(B) t (lowercase letter)
(C) Both equally
(D) Neither
16. Why study genetics fundamentals? [1]
(A) To understand heredity and variation
(B) No reason
(C) It's not useful
(D) Only for tests