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1. The garden flower Salpiglosis sinuate ("painted tongue") come in different colors. Several crosses are made between true- breeding parental strains to produce F₁ plants, which are in turn self-fertilized to produce F2 progeny. Parents Red x blue Lavender x F₁ phenotypes All red All lavender F2 phenotypes 102 red, 33 blue 149 lavender.

1. The garden flower Salpiglosis sinuate ("painted tongue") come in different colors. Several crosses are made between true- breeding parental strains to produce F₁ plants, which are in turn self-fertilized to produce F2 progeny. Parents Red x blue Lavender x F₁ phenotypes All red All lavender F2 phenotypes 102 red, 33 blue 149 lavender.

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
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1. The garden flower Salpiglosis sinuate ("painted tongue") come in different colors. Several crosses are made between true- breeding parental strains to produce F₁ plants, which are in turn self-fertilized to produce F2 progeny. Parents Red x blue Lavender x blue Lavender x red F₁ phenotypes All red All lavender All bronze Red x yellow All red Yellow x Blue All lavender F2 phenotypes 102 red, 33 blue 149 lavender, 51 blue 84 bronze, 43 red, 41 lavender 133 red, 58 yellow, 43 blue 183 lavender, 81 yellow, 59 blue
Transcribed Image Text:1. The garden flower Salpiglosis sinuate ("painted tongue") come in different colors. Several crosses are made between true- breeding parental strains to produce F₁ plants, which are in turn self-fertilized to produce F2 progeny. Parents Red x blue Lavender x blue Lavender x red F₁ phenotypes All red All lavender All bronze Red x yellow All red Yellow x Blue All lavender F2 phenotypes 102 red, 33 blue 149 lavender, 51 blue 84 bronze, 43 red, 41 lavender 133 red, 58 yellow, 43 blue 183 lavender, 81 yellow, 59 blue
a. State a hypothesis explaining the inheritance of flower color in painted tongues. b. Assign genotypes to the parents, F₁ progeny, and F2 progeny for all five crosses. c. In a cross between true-breeding yellow and true-breeding lavender plants, all of the F1 progeny are bronze. If you used F₁ plants to produce and F2 generation, what phenotypes in what ratios would you expect? Are there any genotypes that might produce a phenotype that you cannot predict from earlier experiments, and if so, how might this alter the phenotypic ratios among the F2 progeny?
Transcribed Image Text:a. State a hypothesis explaining the inheritance of flower color in painted tongues. b. Assign genotypes to the parents, F₁ progeny, and F2 progeny for all five crosses. c. In a cross between true-breeding yellow and true-breeding lavender plants, all of the F1 progeny are bronze. If you used F₁ plants to produce and F2 generation, what phenotypes in what ratios would you expect? Are there any genotypes that might produce a phenotype that you cannot predict from earlier experiments, and if so, how might this alter the phenotypic ratios among the F2 progeny?
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