Red Lynx

Red Lynx is a population genetics simulator written in client-side Javascript by Dr. Reed A. Cartwright. It involves the manipulation of a number of evolutionary forces to explore their effects on the proportion of two alleles –A and a– in the population.

Variables
The user has control over a number of variables in the simulation:

Default settings
Under the default settings, the frequency of A is set at 50% and there is no selection pressure. You can experiment with unadulterated Genetic drift, like so:



You can then alter the population size and number of generations, to see how they change what is observed.

Selection pressure
By decreasing the initial frequency down to 1%, increasing the selection pressure to, say, 10-3 (1.e-3) and raising both the population and the number of generations to their maximums you can see (after a possibly considerable wait) the shape of the curve produced by the action of positive selection from a small starting population: