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  • The Teosinte Hypothesis

    The Teosinte Hypothesis

    Activity

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

  • Film Guide for Popped Secret: The Mysterious Origin of Corn

    Film Guide for Popped Secret: The Mysterious Origin of Corn

    Film Guide

    The following classroom-ready resources complement the film Popped Secret: The Mysterious Origin of Corn, which tells the story of how geneticists and archaeologists have come together to determine how and where corn was domesticated nearly 9,000 years ago. 

  • Mendelian Genetics, Probability, Pedigree, and Chi-Square Statistics

    Mendelian Genetics, Probability, Pedigree, and Chi-Square Statistics

    Activity

    A lesson that requires students to work through a series of questions pertaining to the genetics of sickle cell disease and its relationship to malaria. These questions will probe students' understanding of Mendelian genetics, probability, pedigree analysis, and chi-square statistics.

  • Using Genetic Crosses to Analyze a Stickleback Trait

    Using Genetic Crosses to Analyze a Stickleback Trait

    Activity

    A hands-on activity in which students analyze the results of genetic crosses between stickleback fish with different traits.

  • Pedigrees and the Inheritance of Lactose Intolerance

    Pedigrees and the Inheritance of Lactose Intolerance

    Activity

    Students explore the genetic changes associated with lactose tolerance/intolerance and how the trait is inherited in families.

  • The Making of the Fittest: Natural Selection in Humans

    The Making of the Fittest: Natural Selection in Humans

    Short Film

    (14 min 3 sec) In some parts of the world, there is an intimate connection between the infectious parasitic disease malaria and the genetic disease sickle cell anemia.

  • Genetics of Bitter Taste Perception

    Genetics of Bitter Taste Perception

    Lecture

    (50 min 39 sec) How humans perceive bitter taste, and the evolution of taste perception.

  • Classroom Activities: Pedigree Analysis Activity

    Classroom Activities: Pedigree Analysis Activity

    Activity

    To accompany the lecture series Learning from Patients: The Science of Medicine.

  • A Healthy Nervous System: A Delicate Balance

    A Healthy Nervous System: A Delicate Balance

    Lecture

    (58 min 32 sec) Mutations in key genes can lay waste to the nervous system. By studying large families predisposed to developing these genetic disorders, scientists can identify the responsible altered gene.

  • Exclusion Mapping

    Exclusion Mapping

    Animation

    (32 sec) A useful technique for narrowing down the location of a gene involves comparing the chromosomes of affected siblings. Two sisters with Rett syndrome allow researchers an opportunity to map the most likely location of the gene by excluding areas of the chromosome that are not alike.

  • SCA1 Pedigree

    SCA1 Pedigree

    Animation

    (30 sec) Illustrates how studying one family's pedigree can reveal an entire history of passing on a genetic disorder such as SCA1.

  • Xs and Os: The Tic-Tac-Toe of Sex Determination

    Xs and Os: The Tic-Tac-Toe of Sex Determination

    Activity

    A jigsaw format activity to explore the sex determination mechanisms of seven organisms.

  • Test Your Knowledge of Sex Determination

    Test Your Knowledge of Sex Determination

    Click & Learn

    Answer the questions in this online quiz to test your knowledge of what determines the sex of a human, a fruit fly, and a snapping turtle.

  • Evolution of the Y Chromosome

    Evolution of the Y Chromosome

    Animation

    (5 min 39 sec) How did the human Y chromosome become so small relative to its X counterpart? This animation depicts the 300-million-year odyssey of the sex chromosomes that began when the proto X and Y were an identical pair.

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