Population Genetics evo-edu.org

Landscape genetics and spatial population-change materials for movement, barriers, and population structure.

Movement and structure

Explore how movement, barriers, and landscape structure shape gene flow.

Gene Flow Mapper helps learners connect spatial structure to allele movement, divergence, and the consequences of dispersal limits or landscape barriers.

Open application Study guide Curriculum alignment About API
Core question How do movement and barriers alter the genetic structure of populations across space?
What you can explore Use the application page to run the spatial simulation, then use the study guide and alignment page to frame observations and instructional use.
What to watch for Track how structure emerges across space, and compare gradual separation from distance with abrupt separation caused by barriers.
Ways to use it Use the spatial simulation to connect maps, movement, and fragmentation, then carry that evidence into the guide and curriculum pages.

Use This Tool

Gene Flow Mapper in the learning pathway

Interactive investigation

Use the application page to run the spatial simulation, then use the study guide and alignment page to frame observations and instructional use.

Concepts to keep in view

  • gene flow
  • barriers
  • fragmentation
  • population structure
  • dispersal distance

Teaching and Inquiry

Good first moves

  • Run a no-barrier case and describe the resulting pattern across the landscape.
  • Add one or more barriers and explain how the map changes over time.

Discussion moves

  • Ask learners to predict outcomes before placing barriers and then compare their expectations to the resulting maps.
  • Use the tool to distinguish isolation by distance from abrupt separation caused by barriers.

Context and Related Resources

Public evo-edu framing over the legacy landgen implementation. Read the fuller about and provenance notes.