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DNA and Traits: Science PowerPoint for Teachers

This CPO Science PowerPoint presentation guides teachers through the 5-E teaching model, with slides for engaging, exploring, explaining, elaborating, and evaluating lessons. Slide notes offer suggestions for quizzes, readings, investigations, and practice materials. Additional science background is provided where needed. Use the slide notes for additional information. Classroom-ready slides cover topics like DNA, chromosomes, gene traits, alleles, dominant and recessive alleles, Punnett squares, and genetics vocabulary. Engage students with interactive quizzes and reading materials.

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DNA and Traits: Science PowerPoint for Teachers

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  1. To the teacher: • This CPO Science PowerPoint presentation is designed to guide you through the process of presenting the lesson to your students. The presentation uses a 5-E teaching model: Engage, Explore, Explain, Elaborate, and Evaluate. • The PowerPoint Slide notes indicate where you may want to bring in various lesson elements such as quizzes, readings, investigations, animations, and practice materials. Additional science background information is provided in the slide notes where appropriate. You can view these notes by selecting “View,” then “Normal.” You will see the notes pane at the bottom of the PowerPoint workspace. Additionally, the slide notes are available as a separate document, accessible from the lesson home page. • The slides that follow are intended for classroom use.

  2. What’s the connection? • Here’s an image of some common dog breeds. Notice how the traits of each dog differ. The diagram shows DNA in the form chromosomes in the nucleus of a cell. • How are these two images related?

  3. Time to investigate! • Complete the lesson investigation: • Observing Human Traits

  4. Why is that flower purple? • gene - a unit that determines traits • alleles - different forms of a gene • dominant allele - the form of a gene that, when present, covers up the appearance of the recessive allele • recessive allele - the form of a gene that is hidden when the dominant allele is present

  5. Punnett squares A punnett square shows all of the possible combinations of alleles from the parents. Here are some examples:

  6. Time for practice! • Complete the lesson practice activity: • Genetics Vocabulary

  7. Show what you know! • Try the lesson’s interactive quiz, or complete a quiz that your teacher can print out for you. • Hint: • You might want to review your lesson reading piece one more time before trying the quiz.

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