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  • HIV Reverse Transcription and AZT

    HIV Reverse Transcription and AZT

    Card Activities

    Students model how the anti-HIV drug AZT (azidothymidine) interferes with the process of viral replication.

  • HIV Receptors and Co-receptors

    HIV Receptors and Co-receptors

    Labs & Demos

    This demonstration models the first step of the HIV life cycle: the binding of HIV envelope proteins to receptors on human helper T cells.

  • Bat Echolocation

    Bat Echolocation

    Data Points

    In this study, researchers tested whether bats change their behavior while hunting based on feedback from echolocation.

  • Think Like a Scientist: Natural Selection in an Outbreak

    Think Like a Scientist: Natural Selection in an Outbreak

    Scientists at Work

    (7 min 29 sec) This video brings us to the front lines of the 2013–2015 Ebola outbreak in west Africa and explains how scientists monitored the evolution of the virus by analyzing its genome.

  • How Animals Use Sound to Communicate

    How Animals Use Sound to Communicate

    Click & Learn

    Using elephants, finches, bats, and moths, as case studies, explore different aspects of how animals use sound to communicate.

  • Patterns of Zoonotic Disease

    Patterns of Zoonotic Disease

    Data Points

    In this study, scientists analyzed previously published data on terrestrial mammal zoonotic host species and the pathogens they carry to search for global patterns of zoonotic disease distribution.

  • Understanding Variation

    Understanding Variation

    Lessons

    This lesson complements the film The Biology of Skin Color and discusses variation in human skin color and polygenic inheritance. Also available in Spanish.

  • Thermoregulation in Dinosaurs

    Thermoregulation in Dinosaurs

    Data Points

    Grady and colleagues compared dinosaur fossil evidence with evidence from living animal species to shed more light on the type of thermoregulation that dinosaurs used—ectothermy, endothermy, or mesothermy.

  • Virus Explorer

    Virus Explorer

    Click & Learn

    Explore the similarities and differences of a variety of viruses by sorting them based on structure, genomic make-up, host range, transmission mechanism, and vaccine availability.

  • Virus Hunter: Monitoring Nipah Virus in Bat Populations

    Virus Hunter: Monitoring Nipah Virus in Bat Populations

    Scientists at Work

    (9 min 1 sec) In this video we follow scientists working in Bangladesh as they test fruit bat populations to determine whether they are infected with Nipah virus—a potentially deadly virus when passed on to humans.

  • Alzheimer’s Disease: Piecing Together the Evidence

    Alzheimer’s Disease: Piecing Together the Evidence

    Click & Learn

    This interactive explores evidence from brain anatomy, tissue histology, and genetic studies to reveal possible targets for the treatment of Alzheimer’s disease.

  • Origin of a Gene Mutation Causing Early-Onset Alzheimer’s Disease

    Origin of a Gene Mutation Causing Early-Onset Alzheimer’s Disease

    Data Points

    A team of scientists built a pedigree of a large extended family in Antioquia, Colombia, that has a high prevalence of early-onset familial Alzheimer’s disease due to a mutation in the PSEN1 gene. Worksheets also available in Spanish.

  • Amylase Copy Number and Diet

    Amylase Copy Number and Diet

    Data Points

    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.

  • Origin of Birds With Quiz

    Origin of Birds With Quiz

    Interactive Videos

    (18 min 59 sec) Embedded quiz modules test students’ understanding as they watch a short film about the evidence that showed birds descended from dinosaurs.

  • Genetic Origin of Variation in Human Skin Color

    Genetic Origin of Variation in Human Skin Color

    Data Points

    Dr. Rebecca Lamason and colleagues studied the genetic origin of variation in human skin color using a model organism, the zebrafish.

  • Comparative Anatomy of the Domestic Chicken

    Comparative Anatomy of the Domestic Chicken

    Click & Learn

    Trace the evolutionary history of birds by comparing the shapes and structures of certain bones in a chicken to those of some of its extinct and living relatives. Also available in Spanish.

  • Human Skin Color: Evidence for Selection

    Human Skin Color: Evidence for Selection

    Case Studies

    This case study is based on the short film The Biology of Skin Color. Students use real data to propose hypotheses, make predictions, and justify claims with evidence. Also available in Spanish.

  • The Origin of Flight: What Use Is Half a Wing?

    The Origin of Flight: What Use Is Half a Wing?

    Scientists at Work

    (8 min 16 sec) Biologist Ken Dial's study of how young birds use their developing wings sheds light on the evolution of flight in birds.

  • How We Get Our Skin Color Interactive

    How We Get Our Skin Color Interactive

    Interactive Videos

    (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.

  • Film Guide for The Biology of Skin Color

    Film Guide for The Biology of Skin Color

    Film Guides

    The following classroom-ready resources complement The Biology of Skin Color. Featuring anthropologist Dr. Nina Jablonski, the film walks us through the evidence that differences in human skin color are adaptations to varying intensity of UV light. Also available in Spanish.

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