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28. You perform a cross between two true-breeding strains of zucchini. One has green fruit and the other has yellow fruit. The F, plants are all green, but when these are crossed, the F₂ plants consist of 9 green: 7 yellow. a. Explain this result. What were the genotypes of the two parental strains? b. Indicate the phenotypes, with frequencies, of the progeny of a testcross of the F, plants. c. Describe the epistasis interactions observed.

28. You perform a cross between two true-breeding strains of zucchini. One has green fruit and the other has yellow fruit. The F, plants are all green, but when these are crossed, the F₂ plants consist of 9 green: 7 yellow. a. Explain this result. What were the genotypes of the two parental strains? b. Indicate the phenotypes, with frequencies, of the progeny of a testcross of the F, plants. c. Describe the epistasis interactions observed.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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28. You perform a cross between two true-breeding strains of zucchini. One has green fruit and the other has yellow fruit. The F₁ plants. are all green, but when these are crossed, the F₂ plants consist of 9 green : 7 yellow. a. Explain this result. What were the genotypes of the two parental strains? b. Indicate the phenotypes, with frequencies, of the progeny of a testcross of the F₁ plants. c. Describe the epistasis interactions observed.
Transcribed Image Text:28. You perform a cross between two true-breeding strains of zucchini. One has green fruit and the other has yellow fruit. The F₁ plants. are all green, but when these are crossed, the F₂ plants consist of 9 green : 7 yellow. a. Explain this result. What were the genotypes of the two parental strains? b. Indicate the phenotypes, with frequencies, of the progeny of a testcross of the F₁ plants. c. Describe the epistasis interactions observed.
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