Complete heterochromia is a mutation that causes a person to have two different colored eyes. Class members explore how genotypes affect phenotypes. The instructor shows how changes in DNA can occur via mistakes in replication, radiation, and through carcinogens, and viewers see that mutations can be beneficial, neutral, or harmful.

Concepts

genotypes, phenotypes, dna replication, genetic mutation

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Additional Tags

science

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Instructional Ideas

• Have scholars research other beneficial mutations and present findings to the class

Classroom Considerations

• Classroom must have a computer, access to the Internet, and a way to project the video
• Video assumes learners have a basic understanding of genetics, mitosis, and meiosis
• Video 15 in a series of 31

Pros

• Includes a link for a concept map, slideshow, and review worksheet
• Very interesting discussion about a change in DNA that keeps people with this change in their genes from getting HIV

Cons

• None

Common Core

RST.11-12.4