Some alleles share codominance rather than dominant or recessive. The video explains how codominance is determined and what it looks like in animals. Part of the Fuse School Genetics series, it relates the topic to human blood types and the difference between genotypes and phenotypes.

Concepts

codominance, genetics, genotypes, phenotypes, alleles, blood types

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Additional Tags

science

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Instructional Ideas

• Discuss the genetics of skin color—in animals or humans
• Relate dominance to the need to match blood types for transfusions

Classroom Considerations

• Relies on prior knowledge of Punnett squares and monohybrid crosses

• This video is hosted on YouTube

Pros

• Requires very little class time
• Simple graphics enhance the concepts

Cons

• None

Common Core

RST.9-10.4 RST.11-12.4