The beaks of finches on the island changed in size after a catastrophic draught. Students analyze graphs and explore how natural selection affects populations.
Students distinguish between allopatric and sympatric speciation and then identify what types of isolating mechanisms are described in scenarios.
This activity was designed for students during the COVID-19 pandemic and is intended to be completed individually at home. The lesson explores the two models of speciation: allopatric and sympatric. You can also assign a simple print version that explores speciation modes. Students first read about allopatric speciation and apply it to the finches on…