Unit Overview

Lesson Overview

Students solve a mutations mystery to understand the core ideas behind genes and DNA. In The Make, students randomly select a trait from a bag and compete in survival challenges. Through this activity, they discover that mutations can be beneficial, harmful, or neutral. The unit ends with an engineering challenge in which students use CRISPR to genetically modify a gene to solve a medical problem.

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    Solve: Mutations Phenomena + Six-Toed Cat Mystery

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    Make: Compete in survival challenges to determine whether mutations are helpful, harmful, or neutral

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    Engineer: Use CRISPR, a new gene editing tool, to Engineer a Solution to a Genetic Problem

  • Next Generation Science Standards
    MS-LS3-1
    Develop and use a model to describe why structural changes to genes (mutations) located on chromosomes may affect proteins and may result in harmful, beneficial, or neutral effects to the structure and function of the organism. [Clarification Statement: Emphasis is on conceptual understanding that changes in genetic material may result in making different proteins.] [Assessment Boundary: Assessment does not include specific changes at the molecular level, mechanisms for protein synthesis, or specific types of mutations.]
    MS-LS4-5
    Gather and synthesize information about technologies that have changed the way humans influence the inheritance of desired traits in organisms. [Clarification Statement: Emphasis is on synthesizing information from reliable sources about the influence of humans on genetic outcomes in artificial selection (such as genetic modification, animal husbandry, gene therapy); and, on the impacts these technologies have on society as well as the technologies leading to these scientific discoveries.]
  • Inquiry Scale

    • Each lesson in the unit has an Inquiry Scale that provides directions on how to implement the lesson at the level that works best for you and your students.
    • “Level 1” is the most teacher-driven, and recommended for students in 4th-5th grades. “Level 4” is the most student-driven, and recommended for students in 7th-8th grades.
    • For differentiation within the same grade or class, use different inquiry levels for different groups of students who may require additional support or an extra challenge.
  • Common Misconceptions
    • Students often assume that all mutations are bad. Emphasize to students that mutations can often be beneficial or have no effect at all. A great example is the mutation for sickle cell anemia: if an individual is a carrier of the mutation, they are immune to malaria.
    • The terms DNA, gene and chromosome are often confused. A simple picture can show how coiled DNA creates a chromosome and a gene is a section of DNA that codes for a particular trait.
    • Students often think there is only one gene for every trait. In reality, most traits are due to multiple genes interacting.
    • Students initially think that all mutations that occur will be passed onto offspring. Emphasize that there are normal body cells and sex cells. The mutation can only be passed on if it happens in a sex cell because that is used to make the offspring.
  • Vocabulary
      • Gene
      • Chromosome
      • Trait
      • Mutation
      • DNA
      • Protein
  • Content Expert
    • Mohamed Noor
      Professor of Biology Duke University
  • Leveled Reading

    * To give our users the most comprehensive science resource, Mosa Mack is piloting a partnership with RocketLit, a provider of leveled science articles.

    • We're All Different

      Most of our traits are inherited, or passed down, from our parents. Some of them can be the result of mutations, which is an important of the genetic variation that makes different organisms unique and more likely to survive in a changing environment.

    • How do Living Things Change?

      How do living things change into all the different organisms around us? In this article, students read an introduction to the idea that genes are responsible for creating proteins. Mutations in genes can change the proteins that are made and this can change the traits of the organism.

    • Don't Hate on the Trait

      Traits are passed down through genes. Heredity is the study of how these directions are passed down from parents to children.

    • We're All Different

      Most of our traits are inherited, or passed down, from our parents. Some of them can be the result of mutations, which is an important of the genetic variation that makes different organisms unique and more likely to survive in a changing environment.

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