The fungus Melampsora lini causes a disease known as flax rust. Different strains of M. lini cause varying degrees of the disease. Conversely, different strains of flax are resistant or sensitive to the various varieties of the fungus. The Bombay variety of flax is resistant to M. lini strain 22 but sensitive to M. lini strain 24. A strain of flax called 770B is just the opposite; it is resistant to strain 24 but sensitive to strain 22. When 770B was crossed to Bombay, all F1 individuals were resistant to both strain 22 and strain 24. When F1 individuals were self-fertilized, the following data were obtained: 43 resistant to strain 22 but sensitive to strain 24 9 sensitive to strain 22 and strain 24 32 sensitive to strain 22 but resistant to strain 24 110 resistant to strain 22 and strain 24 Explain the inheritance pattern for flax resistance and sensitivity to M. lini strains.

The fungus Melampsora lini causes a disease known as flax rust. Different strains of M. lini cause varying degrees of the disease. Conversely, different strains of flax are resistant or sensitive to the various varieties of the fungus. The Bombay variety of flax is resistant to M. lini strain 22 but sensitive to M. lini strain 24. A strain of flax called 770B is just the opposite; it is resistant to strain 24 but sensitive to strain 22. When 770B was crossed to Bombay, all F1 individuals were resistant to both strain 22 and strain 24. When F1 individuals were self-fertilized, the following data were obtained: 43 resistant to strain 22 but sensitive to strain 24 9 sensitive to strain 22 and strain 24 32 sensitive to strain 22 but resistant to strain 24 110 resistant to strain 22 and strain 24 Explain the inheritance pattern for flax resistance and sensitivity to M. lini strains.

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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