PRINCIPLES OF INHERITANCE AND VARIATION Quiz 4 1. Select the correct statement: (A) Alleles can be similar or dissimilar. (B) Recessive parental traits are expressed without any blending in the F1 generation. (C) Tall and dwarf plants produce gametes by the process of mitosis. (D) Alleles do not segregate from each other during gamete formation. 2. The scientist who developed Punnett square was a _______. (A) British geologist (B) German botanist (C) German geneticist (D) British geneticist 3. A good example to understand incomplete dominance is: (A) Flower colour in Dog flower (B) Coat colour in mice (C) Antirrhinum sp. (D) ABO blood grouping 4. F1 generation resembles both parents in the case of ______ (A) Incomplete dominance (B) Co-dominance (C) Dominance (D) None of these 5. Which of the following allele of a gene (I) does not produce any sugar? (A) IA (B) IB (C) IAB (D) i 6. Crossing of a tall plant from F2 generation with a dwarf plant is called______ (A) Selfing (B) F1 Monohybrid cross (C) Back cross (D) Test cross 7. The hybrids contain alleles which express contrasting traits, the plants are: (A) Homozygous (B) Heterozygous (C) Intermediate (D) Incomplete 8. A graphical representation to calculate the probability of all possible genotypes of offspring in a genetic cross called________ (A) Punnett cross (B) Punnett graph (C) Punnett square (D) Monohybrid cross 9. Genus of dog flower is: (A) Mirabilis (B) Antirrhinum (C) Oenothera (D) Atropa 10. Which of the following cannot be understood by Punnett square: (A) the production of gametes by the parents (B) the formation of the zygotes (C) the formation of the F1 and F2 plants (D) the phenomenon of linkage 11. Dog flower is also known as ______ (A) Mirabilis jalapa (B) Snapdragon (C) Oenothera (D) Atropa belladona 12. Genotypic ratio of monohybrid cross is: (A) 3:1 (B) 9:3:3:1 (C) 1:2:1 (D) 1:1 13. _________ is based on the fact that alleles do not show any blending. (A) Law of dominance (B) Law of segregation (C) Law of independent assortment (D) Codominance 14. Ratio of TT: Tt: tt in monohybrid F2 generation: (A) 1/4: 1/2: 1/4 (B) 1/2: 2/2: 1/2 (C) 1/4: 2/2: 1/4 (D) 1/16: 2/16: 1/16 15. ABO blood groups are controlled by the: (A) Gene A (B) Gene B (C) Gene I (D) All of these 1 out of Time is Up! Time's up
