8. In sesame plants, the one-pod condition is dominant to the three-pod conditio

Question

8. In sesame plants, the one-pod condition is dominant to the three-pod condition, and normal leaf is dominant to wrinkled leaf. These traits are inherited independently Determine the genotypes for the two parents for all the possible matings producing the following offspring a. b. c. d. 318 one-pod normal, 98 one-pod wrinkled 323 three-pod normal, 106 three-pod wrinkled 401 one-pod normal 150 one-pod normal, 147 one-pod wrinkled, 51 three-pod normal, 48 three-pod wrinkled 223 one-pod normal, 72 one-pod wrinkled, 76 three-pod normal, 27 three-pod wrinkled e.

Explanation / Answer

8. Ans: e. 223 one-pod normal, 72 one-pod wrinkled, 76 three pod normal, 27 three-pod wrinkled

Since the traits are inherited independently, the phenotypic ratio follows the Mendelian ratio 9:3:3:1 for a dihybrid cross.

27 x 9 -= 243 this is approximately = 223

27 x 3 = 81 which is approximately equal to 72 and 76

homozygous 223 one-pod (dominant)normal (dominant, heterozygous 72 one-pod (dominant)wrinkled (recessive), heterozygous 78 three-pod (recessive) normal (dominant), homozygous 27 three-pod (recessive) wrinkled (recessive).

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