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B Colourless orange pink purple green 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. (22) b) What proportion of the offspring of an AaBBCCDdEe x aaBBCcDdEe cross is expected to have coloured flowers? (2)

B Colourless orange pink purple green 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. (22) b) What proportion of the offspring of an AaBBCCDdEe x aaBBCcDdEe cross is expected to have coloured flowers? (2)

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. D. Colourless orange pink purple green 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. Determine the F1 and F, phenotypes from a cross between AABBCCDDEE and AABBCCDDee plants. (22) What proportion of the offspring of an AABBCCDDE x aaBBCcDdEe cross is expected to have coloured flowers? (2) a) b) 2. In a species of beetles, individuals may be red, black, white or tan. Colour is controlled by a single gene with multiple alleles in a k. Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Save and Submit ENG US acer A S P R E -
Transcribed Image Text:1. In a plant species, flower-colour is determined by the biochemical pathway shown below: E A B. D. Colourless orange pink purple green 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. Determine the F1 and F, phenotypes from a cross between AABBCCDDEE and AABBCCDDee plants. (22) What proportion of the offspring of an AABBCCDDE x aaBBCcDdEe cross is expected to have coloured flowers? (2) a) b) 2. In a species of beetles, individuals may be red, black, white or tan. Colour is controlled by a single gene with multiple alleles in a k. Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Save and Submit ENG US acer A S P R E -
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