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.

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CCSS: Adaptable
Additional Tags

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

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

  • None
Common Core