Population Genetics Model by Mike Martin

This page allows you to iterate a model, given below, for the frequency of allele A in a population of size N (so there are are 2N alleles). Let p be the frequency of A and then the frequency of allele a is 1 - p. Let r = 1 - w_{AA} where w_{AA} is the relative survival rate for genotype AA. Also, let s = 1 - w_{aa} where w_{aa} is the relative survival rate for genotype aa. It is assumed on this page that w_{Aa}, the relative survival rate of genotype Aa, is equal to 1. It can be shown that at generation t+1, the variable p satisfies

So, given an initial frequency value, p_{0}, this formula is iterated T generations using selected values of r and s.

Enter in the value of the parameters and select the plotting bounds, then press the "Plot" button.

r =

s =

p_{0} =

T =

References:

Wikipedia's Selection Scholarpedia's Articles on Models of Genetic Selection

Scholarpedia's Articles on Models of Genetic Selection