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Gene Expression Part 2: Expression of Herbicide Resistant ALS Genes in Plants: Overview for Gene Expression Part 2 Don Lee Department of Agronomy and Horticulture at University of Nebraska-Lincoln, USA Patricia Hain Department of Agronomy and Horticulture at University of Nebraska-Lincoln, USA Lesson Navigation Tips: - Click on 'Animations' button found to the left in order to view the animation which supplements this lesson. You can also click on the animation icon within the text. - Click once on figures to see enlarged versions. - Click once on words in color to bring up their definitions. In this lesson we will describe how changes in the gene can alter the gene expression process and influence traits in an organism. The specific example of ALS-inhibitor herbicide resistance is used to demonstrate the impact of genetic change on trait expression in a plant.