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Life Science · Heredity & Variation

DNA, Genes & Chromosomes: How Traits Are Inherited

Model how genes are organized on chromosomes, compare sexual and asexual inheritance, and explain conceptually how mutations can alter proteins and affect traits.

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55 min~12 min prep5 materialsNGSS Middle School (Grades 6–8) Alignment · MS-LS3-1 · MS-LS3-2

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Lesson overview

What students will learn

  • Explain the relationship among DNA, genes, and chromosomes using a model.
  • Model why sexual reproduction produces genetic variation while asexual reproduction usually copies the parent's genetic information.

Key science ideas

  • DNA stores genetic information.
  • Genes are segments of DNA located on chromosomes.
  • Chromosomes carry many genes.

Lesson at a glance

  • Grade 6
  • 55 min
  • ~12 min prep
  • MS-LS3-1 · MS-LS3-2
  • 5 materials

What’s included

  • Lesson Plan
  • Investigation
  • Teacher Slides
  • Printable Worksheet
  • Teacher Answer Key
  • Interactive Activity
  • Vocabulary