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  • Developing an Explanation for Mouse Fur Color

    Developing an Explanation for Mouse Fur Color

    Activities

    Students collect and analyze evidence for each of the major conditions for evolution by natural selection to develop an explanation for how populations change over time. Also available in Spanish.

  • Pelvic Evolution in Sticklebacks

    Pelvic Evolution in Sticklebacks

    Data Points

    Scientists used SNP genotyping in populations of freshwater stickleback fish to determine the genetic mutations responsible for the impaired development of pelvises and spines.

  • New Laetoli Footprints and Hominin Body Size

    New Laetoli Footprints and Hominin Body Size

    Data Points

    Scientists were excavating a site in Laetoli, Tanzania when they uncovered two new sets of hominin tracks located about 150 meters south of the tracks found by Mary Leakey in the 1970’s. They estimated the heights of the two individuals using the size and shape of the footprints.

  • Origins of Antibiotic Resistance

    Origins of Antibiotic Resistance

    Data Points

    Scientists collected bacteria from locations that had never been exposed to humans or modern antibiotics to determine if antibiotic resistance is newly evolved since the introduction of antibiotics or has evolved independently.

  • Mimicry in a Diverse Community of Arthropods

    Mimicry in a Diverse Community of Arthropods

    Data Points

    Researchers exposed arthropod mimics that use a golden patch to warn of unpalatability to predators with different prey preferences to determine how effective their warnings were.

  • Dating Corn Domestication Using Carbon Isotopes

    Dating Corn Domestication Using Carbon Isotopes

    Data Points

    To study the change in diet as human populations changed lifestyles from hunter-gatherers to agriculturalists, scientists measured carbon isotopes in the collagen tissues of human skeletons from North America.

  • 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.

  • 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.

  • 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.

  • 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.

  • Moth Mimicry: Using Ultrasound to Avoid Bats

    Moth Mimicry: Using Ultrasound to Avoid Bats

    Scientists at Work

    (10 min 24 sec) This video follows scientists as they uncover the ways in which moth species in Gorongosa National Park use ultrasound to avoid being eaten by bats.

  • 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.

  • Spanish Materials

    Spanish Materials

    Collection

    A selection of short films, animations, classroom materials, and interactive features that are available in Spanish. Go to the resource pages below to find links to view or download the Spanish...

  • Spreadsheet Tutorial 5: Histogram

    Spreadsheet Tutorial 5: Histogram

    Activities

    Generate a histogram using a variety of methods.

  • Spreadsheet Tutorial 4: t-Test

    Spreadsheet Tutorial 4: t-Test

    Activities

    Calculate t-values and perform t-tests using built-in functions.

  • The Teosinte Hypothesis

    The Teosinte Hypothesis

    Activities

    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.

  • Animated Life: The Living Fossil Fish

    Animated Life: The Living Fossil Fish

    Animated Shorts

    (7 min 18 sec) This animated short film tells the engaging tale of the discovery of the coelacanth.

  • Animated Life: Mary Leakey

    Animated Life: Mary Leakey

    Animated Shorts

    (7 min 52 sec) This animated short film recounts the life and work of paleoanthropologist Mary Leakey, including her discovery of the Laetoli footprints.

  • Animated Life

    Animated Life

    Collection

    These five short films, produced in conjunction with The New York Times, bring to life five historical scientific discoveries and the people behind them: Alfred Russel Wallace and his contribution to...

  • 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.

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