Search Results

Search Results

Showing 41-67 of 67 Resources
  • Foraminifera—Earth's Microscopic Recordkeepers

    Foraminifera—Earth's Microscopic Recordkeepers

    Poster

    A poster from the 2012 Holiday Lectures on Science, Changing Planet: Past, Present, Future. It details the importance of foraminifera, known as "forams" for short, in discovering significant changes in Earth's past. 

  • Weighing the Evidence for a Mass Extinction—In the Ocean

    Weighing the Evidence for a Mass Extinction—In the Ocean

    Activity

    A hands-on activity in which students see first-hand the difference in foraminifera fossils below and above the K-T boundary. Also available in Spanish.

  • Film Guides: The Day the Mesozoic Died

    Film Guides: The Day the Mesozoic Died

    Film Guide

    The following classroom-ready resources complement The Day the Mesozoic Died, which tells the story of the extraordinary detective work that led to the stunning discovery that an asteroid struck Earth 66 million years ago, triggering a mass extinction of animals, plants and even microorganisms.

  • The Making of the Fittest: The Birth and Death of Genes

    The Making of the Fittest: The Birth and Death of Genes

    Short Film

    (13 min 10 sec) Scientists have pieced together the evolutionary history of the Antarctic icefish. The icefish makes an excellent case study for genetic evolution as both the gain and loss of genes have led to key adaptations.

  • The Making of the Fittest: Natural Selection and Adaptation

    The Making of the Fittest: Natural Selection and Adaptation

    Short Film

    (10 min 25 sec) The rock pocket mouse is a living example of Darwin’s process of natural selection. Also available in Spanish.

  • How Novel Icefish Genes Can Improve Human Health

    How Novel Icefish Genes Can Improve Human Health

    Activity

    A lesson that requires students to read detailed scientific passages and explain how an understanding of specific icefish adaptations might lead to a treatment or cure for human disorders, such as osteoporosis and anemia. 

  • Demonstration: Viscosity of Icefish and Non-Icefish Blood

    Demonstration: Viscosity of Icefish and Non-Icefish Blood

    Activity

    A simple demonstration that uses readily-available materials to simulate how blood pumps through the circulatory system of icefish and other fish.

  • The Molecular Evolution of Gene Birth and Death

    The Molecular Evolution of Gene Birth and Death

    Activity

    An advanced lesson that describes the role of mutations in the birth and death of genes. It includes background information, examples, video clips, and animations.

  • Icefish Adaptations

    Icefish Adaptations

    Activity

    A simple activity that investigates the importance of antifreeze proteins to icefish survival.

  • Film Guides: The Birth and Death of Genes

    Film Guides: The Birth and Death of Genes

    Film Guide

    The following classroom-ready resources complement The Making of the Fittest: The Birth and Death of Genes, which describes how scientists have pieced together the evolutionary history of the Antarctic icefish. The icefish makes an excellent case study for genetic evolution as both the gain and loss of genes have led to key adaptations.

  • Natural Selection and Evolution of Rock Pocket Mouse Populations

    Natural Selection and Evolution of Rock Pocket Mouse Populations

    Activity

    An activity in which students analyze amino acid data and draw conclusions about the evolution of coat color phenotypes in different rock pocket mouse populations.

  • Biochemistry and Cell Signaling Pathway of the Mc1r Gene

    Biochemistry and Cell Signaling Pathway of the Mc1r Gene

    Activity

    An advanced lesson that requires students to analyze partial DNA sequences of the Mc1r gene and identify the effects of mutations on the MC1R protein pathway.

  • Molecular Genetics of Color Mutations in Rock Pocket Mice

    Molecular Genetics of Color Mutations in Rock Pocket Mice

    Activity

    A lesson that requires students to transcribe and translate portions of the wild-type and mutant rock pocket mouse Mc1r genes and compare sequences to identify the locations and types of mutations responsible for the coat color variation described in the film. Also available in Spanish.

  • Color Variation Over Time in Rock Pocket Mouse Populations

    Color Variation Over Time in Rock Pocket Mouse Populations

    Activity

    A data collection and analysis lesson that examines selection for coat color in pocket mouse populations on different color substrates over time. Also available in Spanish.

  • Worksheet for The Stickleback Evolution Virtual Lab

    Worksheet for The Stickleback Evolution Virtual Lab

    Activity

    A worksheet that guides students through The Stickleback Evolution Virtual Lab. The virtual lab lets students learn firsthand the methods for analyzing body structure in stickleback collected from lakes and fossils recovered from a quarry. Students measure, record, and graph their results to discover evolutionary patterns.

  • Classroom Activities: Battling Beetles

    Classroom Activities: Battling Beetles

    Activity

    To accompany the lecture series Evolution: Constant Change and Common Threads.

  • Genetic Switches

    Genetic Switches

    Click & Learn

    Learn about how gene switches can control expression of genes in different tissues.

  • Evolution: Constant Change and Common Threads

    Evolution: Constant Change and Common Threads

    Lecture

    How has the amazing diversity of plants and animals evolved? What can fossils, butterflies, and stickleback fish tell us about the deep common ancestry of all living forms?

  • Stickleback Environment

    Stickleback Environment

    Clip

    (1 min 27 sec) At the end of the ice age, the retreating ice sheet created many new lakes, some of which were colonized by sticklebacks.

  • Paintbrush Gene

    Paintbrush Gene

    Animation

    (49 sec) In two related Drosophila species, a so-called paintbrush gene is activated to "paint" the pigment on the body. In one species, an extra switch activates the gene, resulting in spotted wings.

  • Pitx1 Expression

    Pitx1 Expression

    Animation

    (55 sec) In the stickleback fish, pelvic-fin reduction resulted from changes in the regulatory switch elements of the Pitx1 gene. In the marine ancestor, the Pitx1 gene is activated in the pelvic-fin region during development to generate the fin. In the pelvic-reduced stickleback, the regulatory switch that normally turns on the Pitx1 gene is either missing or non-functional.

  • Pocket Mouse Evolution

    Pocket Mouse Evolution

    Animation

    (1 min 5 sec) This simulation shows the spread of a favorable mutation through a population of pocket mice. Even a small selective advantage can lead to a rapid evolution of the population.

  • Pocket Mouse and Predation

    Pocket Mouse and Predation

    Animation

    (20 sec) The rock pocket mouse is found in two color variants, or morphs: light and dark. In different environments, their visibility to predators such as owls varies. The dark morph is more vulnerable on light sandy desert, and the light morph on dark lava rock.

  • Fossil Record of Stickleback Evolution

    Fossil Record of Stickleback Evolution

    Clip

    (2 min 34 sec) A quarry site in Nevada carries the evolutionary history of a population of stickleback fish that resided there when it was a freshwater lake.

  • The Meaning of Sex: Genes and Gender

    The Meaning of Sex: Genes and Gender

    Lecture

    Four talks focus on sex determination—the molecular and genetic mechanisms that determine whether an organism will be male, female or a hermaphrodite.

  • Clonal vs Sexual Reproduction

    Clonal vs Sexual Reproduction

    Clip

    (8 min 56 sec) What does a stack of fruits and vegetables have to do with the theoretical advantages of sexual reproduction? Find out in this demonstration with student audience members and Dr. David Page.

  • The Y Chromosome

    The Y Chromosome

    Animation

    (2 min 46 sec) The Y chromosome has been likened to a hall of mirrors because its sequence contains many sections that appear to be palindromes. These palindromes provide a clue to some interesting events that may have occurred during the course of the chromosome's evolution.

Refine Results

Narrow your choices by selecting areas below.

Topics

Extended Filters