Science Lesson Plan · Grades 6–10

Genetics and Inheritance Lesson

Teach students the fundamentals of genetics and how traits are inherited. The lesson explains genes, DNA, and chromosomes, introduces dominant and recessive alleles using Mendel’s pea plant experiments, and guides students through reading a Punnett square. Includes comprehension questions and answer key.

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Subject

Science

Grades

Grades 6–10

Skill Focus

Genetics, inheritance, DNA, alleles, dominant, recessive, Punnett square, science

Lesson Length

30–45 minutes

Lesson Overview

Genes, DNA, and How Traits Are Inherited

Genetics is the study of how traits are passed from parents to offspring. Genes are made of DNA and carried on chromosomes. The lesson introduces dominant and recessive alleles using Mendel’s classic pea plant experiments and shows students how to use a Punnett square to predict the traits of offspring.

The four-page lesson covers genotype vs. phenotype, co-dominance, and traits influenced by multiple genes. Comprehension questions and a full answer key are included.

How to Use This Lesson

1. Read the lesson passage together or have students read silently (pages 1–2). Clarify the relationship between DNA, genes, and chromosomes.

2. Walk through the Punnett square example in the lesson together. Have students practice predicting outcomes for a different trait.

3. Assign the comprehension questions (page 3) independently. Review answers using the key on page 4.

Printable Resource

A classroom-ready PDF with everything in one printable resource.

Full Member Resource · Printable PDF · 4 pages