How to Use This Simulation

Step 1: Choose an environment from the dropdown (grassland, desert, arctic, or cave).

Step 2: Adjust selection strength to control how much predation affects non-camouflaged organisms.

Step 3: Click "Next Generation" to advance one generation, or "Run 10 Generations" to watch evolution happen!

Key concept: Organisms that blend in survive and reproduce more — this is natural selection in action!

Generation: 1
10
25%
10
25%
10
25%
10
25%

📈 Trait Frequency Over Generations

Green
Brown
White
Black
50% predation on non-camouflaged
40 individuals

🔬 Natural Selection in Action

This simulation shows the four requirements for natural selection:

  • Variation: Individuals have different traits (colors)
  • Inheritance: Offspring inherit their parent's color
  • Selection: Some colors survive better in certain environments
  • Time: Changes accumulate over many generations

💡 What's Happening?

Start with equal numbers of each color, then run generations. In each generation, organisms that blend in with the environment are more likely to survive and reproduce. Watch how the population changes over time!