3. Please answer the following questions based on the ABC model; that is, three classes of homeotic genes control the floral organ identity. B A C (a) Please indicate on the diagram, which organs A class genes alone, A+B class genes, B+C class genes, and C class genes control respectively? (b) Tom studies the floral identity genes. He found a mutant only develop flowers with two whorls of sepals and two whorls of carpels. Which class(s) of floral homeotic genes may be affected based on the ABC model? (c) What are the genes responsible for the activation of C class gene expression in the third and fourth whorl of flower? How does the expression pattern of the C class gene establish through these regulators?

3. Please answer the following questions based on the ABC model; that is, three classes of homeotic genes control the floral organ identity. B A C (a) Please indicate on the diagram, which organs A class genes alone, A+B class genes, B+C class genes, and C class genes control respectively? (b) Tom studies the floral identity genes. He found a mutant only develop flowers with two whorls of sepals and two whorls of carpels. Which class(s) of floral homeotic genes may be affected based on the ABC model? (c) What are the genes responsible for the activation of C class gene expression in the third and fourth whorl of flower? How does the expression pattern of the C class gene establish through these regulators?

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter17: Developmental Genetics

Section: Chapter Questions

Problem 18TYU: INTERPRET DATA Flower parts are arranged in four concentric circles: sepals, petals, stamens, and...

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