11. In a Klingon carnivorous plant species the gene affecting tooth production has two alleles which exhibit incomplete dominance. Homozygous TT plants form 4 inch spikelike “teeth tt plants have no teeth, and Tt plants have 2 in.teeth. In a test cross of heterozygous plants, what offspring phenotypes are expected? a) all plants with 2 in. teeth b) 1/2 4 in. and 1/2 2 in. plants c) 1/2 2 in. and 1/2 no teeth d) all 4 in. teeth 12. A recessive allele, i, in the fruitfly Drosophila melanogaster alters the normal development of one of the wing veins so that the vein contains a break or interruption within it. The dominant counterpart of this allele, I, produces the wild type phenotype with normal vein development. In examination of several hundred ii flies it was observed that about 90% of the flies have an interrupted vein, while the rest show a normal vein. How would you explain the occurrence of the normal phenotype among some of the ii flies? a) the i allele shows variable dominance b) the i allele shows incomplete penetrance c) the i allele shows variable expression d) the i allele is epistatic to itself 14. Which of the following is not one of the components of Mendel’s Model of Inheritance a) individuals carry two copies of the gene affecting each trait b) the gene copies of different genes affecting two different traits combine at random during gamete formation c) the two copies of the gene affecting a trait enter the same gamete during gamete formation d) the gametes of the two parents combine at random during zygote production e) none-all of the above are components of Mendel’ s model 15. In Jimsonweed, purple flowers (P) are dominant to white flowers (p). purple flowered individual is self-fertilized, there are 28 purple flowered and 10 white flowered progeny. What proportion of the purple flowered progeny will breed true (produce all purple flowered offspring when self-fertilized) a) 1/8 b) 1/3 c) 1/2 d) 2/3 e) all will breed true. When a particular 16. In a species of monkey the diploid chromosome number is 48. The number of pairs of homologous chromosomes in a typical somatic cell is a) 12 b) 24 c) 48 d) 72 e) 96. Mendel established two pure breeding lines of pea plants, one with white flower and one with purple flower. To carry out a cross between the two lines Mendel a) took female white flowered plants and placed them in a room with male purple flowered plants b) allowed bees to carry pollen from purple plants to white plants c) cut the stamens from purple plants before pollen was produced, and then transferred the pollen of the white flowered plants to the pistils of these same purple plants d) allowed the plants to self fertilize e) a & b. 17. Ques. 18-19. You cross an Aa Bb cc individual with an individual of genotype Aa Bb Cc. You 18· The expected proportion of offspring of genotype Aa BB cc is 19. The number of different genotypes expected among offspring of the cross is 20. In Vulcan cats, the homed condition (H) is dominant to the hornless condition (h). A know that all genes assort independently: a) 1/2 b) 1/4 c) 1/8 d) 1/16 e) 1/32. a) 3 b) 6 c) 9 d) 18 e) 27. horned male is mated to two horned females. Female A produces 9 offspring, all horned. Female B produces 6 horned and 2 hornless offspring. The genotype of the horned male is a) HH b) Hh c) hh d) the male could be HH or Hh e) all three genotypes are possibl