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GRADES 6-8 LESSON PLANS GENETICS
LESSON PLAN A INTRODUCTION TO GENETICS
Time Frame: Two 45-minute sessions
Learning Objectives:
• Learn how traits are inherited from one generation to the next. • Gain core knowledge about Gregory Mendel, the world’s first geneticist. • Conduct an experiment that explores the concept of genetic inheritance, using pea plants in the context of Gregor Mendel’s original experiment.
Overview: PPT Slide Examples This lesson introduces the concept of genetic inheritance, using pea plants in the context of Gregor Mendel’s original experiment. Students explore plant reproduction and the expression of dominant and recessive traits in organisms.
Prior Knowledge:
Students need no specific prior knowledge.
Standards Alignment:
MS-LS3-2: Develop and use a model to describe why asexual reproduction results in offspring with identical genetic information and sexual reproduction results in offspring with genetic variation. LS3.A: Variations of inherited traits between parent and offspring arise from genetic differences that result from the subset of chromosomes (and therefore genes) inherited. LS3.B: In sexually reproducing organisms, each parent contributes half of the genes acquired (at random) by the offspring. Individuals have two of each chromosome and hence two alleles of each gene, one acquired from each parent. These versions may be identical or may differ from each other.
Materials for Lesson Plan:
• PowerPoint deck • Computer with Internet and projector • Clothespins (56 for 4 groups of students; 112 for 8 groups of students) • Small paper bags (4 or 8 lunch size bags) • Labels for bags • Fine-point markers for labeling clothespins
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• Rulers (one per group — for clipping clothespins onto, not for measuring) • Copies of Genetics Lesson Worksheet • Copies of Punnett Squares Worksheet • Copies of Punnett Squares Reference Sheet • 2 Punnett Square Templates, laminated
Download the PowerPoint deck in the Worksheets & Downloads section at the end of this lesson. The deck includes a link to the following video, which presents a brief but engaging introduction to the scientist, his discoveries and his legacy. It also covers key vocabulary words and concepts students will use in the Pea Plants & Punnett Squares activity that follows.
TedEd Video: How Mendel’s Pea Plants Helped Us Understand Genetics
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