Genetic Drift

Male northern elephant seals grow to be 13 feet in length and can weigh up to 4,500 pounds. In the video, scholars explore genetic drift in a population through a simulation. The instructor shows allele frequencies changing over time, demonstrating how they drift apart. In the end, pupils see how the bottleneck effect drastically changed the northern elephant seal population. 

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CCSS: Adaptable
NGSS: Adaptable
Instructional Ideas

  • Further research the bottleneck effect on northern elephant seals and share findings with the class
Classroom Considerations

  • Video assumes students understand alleles, dominant/recessive genes, and allele frequency (Hardy-Weinberg)
  • Resource is the eighth in a collection of 18 videos
Pros

  • Video provides links to a concept map, slideshow and two review worksheets
  • Utilizes high-quality diagrams and photographs to help teach the information
Cons

  • None
Common Core

NGSS