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Lessons - Classical Genetics Backcross Breeding 1 - Basic Gene Inheritance This lesson reviews the basics of gene inheritance. It compares plants that are homozygous, heterozygous, and hemizgous for an allele and how gene expression is affected by the dominance of an allele. It also explains how to use a Punnett square to predict genotypic and phenotypic ratios of offspring. View Print Take Quiz Backcross Breeding 2 - The Backcrossing Process This lesson discusses the final stage of developing genetically engineered crops. The need for backcrossing, and the steps of this breeding method are described. Yield lag, yield drag, and gene stac... View Print Take Quiz Corn Rootworm - Part 1: Description of Corn Rootworm and Other Early Season Corn Pests This lesson will discuss the corn rootworm complex, which consists of the northern, western, and southern corn rootworm, focusing on the northern and western species. The information in this lesson ... View Print Herbicide Resistance: Mechanisms, Inheritance, and Molecular Genetics View Print Take Quiz Just the facts View Print Take Quiz Native Plant Breeding: Bringing the Beauty of Nature Home View Print Take Quiz Quantitative Traits View Print Take Quiz The Dihybrid Cross and Independent Assortment View Print Take Quiz The Inheritance of Variation View Print Take Quiz Total: 9

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This project was supported in part by the National Research Initiative Competitive Grants CAP project 2011-68002-30029 from the USDA National Institute of Food and Agriculture, adminstered by the University of California-Davis and by the National Science Foundation (NSF), Division of Undergraduate Education, National SMETE Digital Library Program, Award #0938034, administered by the University of Nebraska. Any opinions, findings, conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the USDA or NSF.
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