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  • Selective Breeding in Maize

    Selective Breeding in Maize

    Data Points

    Researchers performed the longest-running, controlled artificial selection experiment to study whether they could increase the protein concentration of maize (corn) by selective breeding.

  • The Teosinte Hypothesis

    The Teosinte Hypothesis


    In this lesson, students work through the mathematics and concepts behind George Beadle’s claim that teosinte is the wild ancestor of maize. Also available in Spanish.

  • Mapping Genes to Traits in Dogs Using SNPs

    Mapping Genes to Traits in Dogs Using SNPs


    In this hands-on genetic mapping activity students identify single nucleotide polymorphisms (SNPs) correlated with different traits in dogs.