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| Modern Genetic Analysis Chapter 1. Genetics and the Organism Genetic variation in the color of corn kernels. Each kernel represents a separate individual with a distinct genetic makeup. The photograph symbolizes the history of humanity's interest in heredity. Humans were breeding corn thousands of years before the rise of the modern discipline of genetics. Extending this heritage, corn today is an important research organism in classical and molecular genetics. (William Sheridan, University of North Dakota; photo by Travis Amos.)

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