Only one-third of human adults can digest milk. If you're one of the lucky few, you have gene-culture co-evolution to thank. Scholars watch a video to learn how the enzyme lactase is necessary to break down lactose in milk. The gene mutation allowing human adults to produce lactase arose at the same time humans began domesticating animals—hence, gene-culture co-evolution.

Concepts

genes, milk, enzymes

Show More Show Less

Additional Tags

science

Show More Show Less

Instructional Ideas

• Team up with a social studies teacher for the lesson

Classroom Considerations

• Learners should have knowledge of genes and DNA
• Pupils also need to be familiar with isotopes
  

Pros

• Includes review questions at various points in the video
• Informative and interesting resource

Cons

• None