PRINCIPLES OF INHERITANCE AND VARIATION Quiz 2 1. Alleles are: (A) similar forms of the same gene. (B) slightly different forms of the same gene. (C) slightly different forms of the different gene. (D) similar forms of the different gene 2. Which of the following statements are correct for F2 generation? A) The tall and dwarf traits were identical to their parental type. B) The traits did not show any blending. C) The offsprings were tall, dwarf, and between height. (A) A and B (B) B and C (C) A and C (D) All are correct 3. If we use alphabetical symbols for each gene then how do we decide capital letters and small letters for a particular gene? (A) Randomly like Tall can be ‘T’ or ‘t'. (B) Mendel gave symbols for all Genes. (C) Capital letter is used for the trait expressed at the F1 stage and small letter for the other. (D) Capital and small letters are always used for recessive and dominant traits respectively. 4. Which of the following is not the location on the chromosome seen on the traits selected by Mendel? (A) 1 (B) 3 (C) 4 (D) 5 5. “Mendel crossed tall and dwarf pea plants to study the inheritance of one gene". What are the observations seen by Mendel? I) He observed that all the F1 progeny plants were like both of their parents.II) In the F1 generation, none were dwarf.III) F1 always resembled either one of the parents. (A) All are correct observations seen by Mendel. (B) I and II (C) II and III (D) These observations are not seen by Mendel, these are seen by Punnett. 6. How many contrasting traits were selected by Mendel? (A) 1 (B) 2 (C) 7 (D) 14 7. Which of the following character selected by Mendel is located on chromosome number 5? (A) Stem height (B) Flower colour (C) Pod colour (D) Seed shape 8. Which of the following plant is used by Mendel for his hybridization experiment? (A) Pisum sativum (B) Allium cepa (C) Lathyrus odoratus (D) Snapdragon 9. Mendel proposed that something was being stably passed down unchanged, from parent to offspring through the gametes, over successive generation and he called it as _______ (A) Factors (B) Genes (C) Alleles (D) DNA 10. Units of inheritance are: (A) Factors (B) Genes (C) Alleles (D) Gametes 11. Which of the following is a dominant trait in garden pea plant? (A) Constricted Pod shape (B) Yellow Pod colour (C) White Flower colour (D) Axial Flower position 12. Genes which code for a pair of contrasting traits are known as_______ (A) Gametes (B) Factors (C) Alleles (D) Chromosomes 13. Mendel’s monohybrid phenotypic ratio in F2 generation is: (A) 1:1 (B) 3:1 (C) 1:2:1 (D) 9:3:3:1 14. The contrasting traits did not show any blending at ______ (A) F1 stage only (B) F2 stage only (C) either F1 or F2 stage (D) both F1 and F2 stage 15. Which of the following is a recessive trait in garden pea plant? (A) Violet flower colour (B) Axial flower position (C) Inflated Pod shape (D) Green seed colour 1 out of Time is Up! Time's up
