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  • Amylase Copy Number and Diet

    Amylase Copy Number and Diet

    Data Point

    A team of scientists investigated whether there is a correlation between the number of AMY1 gene copies and the type of diet (high-starch or low-starch) of a population.

  • How We Get Our Skin Color Interactive

    How We Get Our Skin Color Interactive

    Interactive Video

    (3 min 32 sec) This interactive animation about the biology of skin color provides stop points at which students can further explore the material through additional text and illustrations, videos, questions, and simple interactive widgets.

  • 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. Also available in Spanish.

  • Cancer and Cell Fate in the Intestinal Epithelium

    Cancer and Cell Fate in the Intestinal Epithelium

    Animation

    (2 min 17 sec) Disrupting the normal processes of differentiation and maturation of the intestinal epithelial cells can lead to cancer. Also available in Spanish.

  • Lactose Digestion in Infants

    Lactose Digestion in Infants

    Animation

    (53 sec) The lactase enzyme is produced in the small intestine of infants. It digests lactose by breaking it into glucose and galactose.

  • Diet and the Evolution of Salivary Amylase

    Diet and the Evolution of Salivary Amylase

    Activity

    Students explore the effects of different diets on the evolution of an enzyme that breaks down starch.

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