INHERITANCE OF TWO GENES 09 HEREDITY AND EVOLUTION Class 10th Biology (Practice Sheet) 1 What is the Law of Independent Assortment? A. Genes of the same trait assort independently during gamete formation B. Genes of different traits assort independently during gamete formation C. Genes are always inherited in pairs D. Genes influence each other's assortment during gamete formation 2 How many types of gametes are produced by a dihybrid individual with the genotype RRYY? A. 2 B. 4 C. 8 D. 16 3 According to Mendel's Law of Independent Assortment, the segregation of genes for seed shape (R and r) is independent of the segregation of genes for seed color (Y and y). What is the expected ratio of phenotypes in the F2 generation of a dihybrid cross? A. 1:1 B. 3:1 C. 9:3:3:1 D. 2:1 4 How are traits expressed in organisms? A. Through the interaction of genes with the environment B. Through the genotype and phenotype C. Through the direct influence of parental traits D. Through the number of chromosomes 5 What is the role of mRNA in the expression of traits? A. It directly forms the phenotype B. It helps in the generation of proteins from genes C. It determines the genotype D. It is not involved in trait expression 6 Describe the significance of Mendel's dihybrid cross in understanding genetic inheritance. 7 How does the Law of Independent Assortment relate to the concept of genetic diversity? 8 How does mRNA contribute to the expression of traits in organisms? 9 Explain the law of independent assortment with a suitable example. 10 Differentiate between genotype and phenotype with an example. Page 1 Email: Phone No: Website:
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