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a) b) Determine the F₁ and F2 phenotypes from a cross between AABBccDDEE and AABBCCDDee plants. What proportion of the offspring of an AaBBCCDdEe x aaBBCcDdEe cross is expected to have coloured flowers?

a) b) Determine the F₁ and F2 phenotypes from a cross between AABBccDDEE and AABBCCDDee plants. What proportion of the offspring of an AaBBCCDdEe x aaBBCcDdEe cross is expected to have coloured flowers?

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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1. In a plant species, flower-colour is determined by the biochemical pathway shown below: E A B C D Colourless purple orange red yellow Genes A, B, C, D, and E are independently assorting. The dominant alleles A, B, C and D encode enzymes that catalyse the corresponding reactions indicated above. The recessive alleles a, b, c and d are non-functional and do not produce active enzymes. The dominant E allele totally inhibits the action of gene D, while the recessive allele e has no effect. a) Determine the F1 and F2 phenotypes from a cross between AABBCCDDEE and AABBCCDDee plants. b) What proportion of the offspring of an AaBBCCDdEe x aaBBCcDdEe cross is expected to have coloured flowers?
Transcribed Image Text:1. In a plant species, flower-colour is determined by the biochemical pathway shown below: E A B C D Colourless purple orange red yellow Genes A, B, C, D, and E are independently assorting. The dominant alleles A, B, C and D encode enzymes that catalyse the corresponding reactions indicated above. The recessive alleles a, b, c and d are non-functional and do not produce active enzymes. The dominant E allele totally inhibits the action of gene D, while the recessive allele e has no effect. a) Determine the F1 and F2 phenotypes from a cross between AABBCCDDEE and AABBCCDDee plants. b) What proportion of the offspring of an AaBBCCDdEe x aaBBCcDdEe cross is expected to have coloured flowers?
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