Ear wax, either wet or dry, is inherited on chromosome 16. The narrator of a video about heredity uses ear wax to introduce the concepts of alleles, dominant and recessive traits, and heterozygous and homozygous genotypes. 

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CCSS: Adaptable
NGSS: Adaptable
Instructional Ideas

  • Have learners research different traits, their dominance, statistics about their presence in the population, and phenotypes of each allele and present their findings to the class
Classroom Considerations

  • Assumes scholars understand alleles
  • Video nine in a series of 40

  • A nice, brief history of heredity, from Aristotle to Gregor Mendel
  • Examining the ear wax gene is a great way to hold viewers' interest

  • Video contains a lot of vocabulary and information, so some students may be overwhelmed
Common Core