Reproducing Turtles

This model is an example of genetic drift. It shows that competing breeds of turtles, each reproducing with the same randomness each turn, will ultimately converge on one breed without any selection pressure forcing this convergence.

For detailed instructions on using the program, take a look at the info window from the Reproducing Turtles model.

Download the StarLogoT source code for the Reproducing Turtles model:
Download gdrepturtles

To run this file you need StarLogoT2002 for the Macintosh.
(download StarLogoT)

Click on one of the pictures to see a quicktime movie of the model: