A type of tomato (Solanum lycopersicum) produces fruit in three possible colors: red, orange, and green. You cross a true-breeding red-fruited plant with a true-breeding green-fruited plant, and all the F1 offspring are red. You intercross the red F1s, and the resulting F2 generation consists of 61 red-, 13 orange-, and 6 green-fruited plants. a) Assign the phenotypes to a modified 9:3:3:1 ratio (do not just calculate the actual ratio of the phenotypes). Show your work.

Concepts of Biology
1st Edition
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:Samantha Fowler, Rebecca Roush, James Wise
Chapter8: Patterns Of Inheritance
Section: Chapter Questions
Problem 2ACQ: Figure 8.10 In pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are...
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A type of tomato (Solanum lycopersicum) produces fruit in three possible colors: red, orange, and green.
You cross a true-breeding red-fruited plant with a true-breeding green-fruited plant, and all the F1
offspring are red. You intercross the red F1s, and the resulting F2 generation consists of 61 red-, 13
orange-, and 6 green-fruited plants.
a) Assign the phenotypes to a modified 9:3:3:1 ratio (do not just calculate the actual ratio of the
phenotypes). Show your work.
Transcribed Image Text:A type of tomato (Solanum lycopersicum) produces fruit in three possible colors: red, orange, and green. You cross a true-breeding red-fruited plant with a true-breeding green-fruited plant, and all the F1 offspring are red. You intercross the red F1s, and the resulting F2 generation consists of 61 red-, 13 orange-, and 6 green-fruited plants. a) Assign the phenotypes to a modified 9:3:3:1 ratio (do not just calculate the actual ratio of the phenotypes). Show your work.
b) Using your own letters with capital letters representing dominant alleles and lowercase letters
recessive alleles, give the genotypes and corresponding phenotypes for all the tomato plants in the P, F1,
and F2 generations.
P:
(phenotype:
) x
(phenotype:
F1:
(phenotype:
F2:
(phenotype:
(phenotype:
(phenotype:
(phenotype:
c) Clearly describe or diagram a pathway that is consistent with these results that explains what each
gene/gene product does and how they interact to create these phenotypes.
Transcribed Image Text:b) Using your own letters with capital letters representing dominant alleles and lowercase letters recessive alleles, give the genotypes and corresponding phenotypes for all the tomato plants in the P, F1, and F2 generations. P: (phenotype: ) x (phenotype: F1: (phenotype: F2: (phenotype: (phenotype: (phenotype: (phenotype: c) Clearly describe or diagram a pathway that is consistent with these results that explains what each gene/gene product does and how they interact to create these phenotypes.
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