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A mistake in copying DNA can result in dwarfism.

In this minds-on activity, students analyze evidence about achondroplasia to learn how a mistake in DNA replication can result in a new mutation that affects a child’s characteristics.

This analysis and discussion activity reviews several basic genetics principles and helps to counteract several common misconceptions about genetics.

The Student Handout is available in the first two attached files and as a Google doc designed for use in online instruction and distance learning. The Teacher Notes, available in the last two attached files, provide instructional suggestions and background information and explain how this activity is aligned with the Next Generation Science Standards.

dwarfism SH.docx1.46 MB
dwarfism SH.pdf304.71 KB
dwarfism TN.docx42.89 KB
dwarfism TN.pdf244.15 KB


iwaldron's picture

2023 revision

The revised Student Handout begins with the driving question and a photo of the anchoring phenomenon. The expanded Student Handout has additional questions about the genetics of achondroplasia.

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