Description Usage Arguments Value Author(s) See Also Examples
This function performs numerical analysis of a frequency dependent selection model based on Rice (2004; Evolutionary Theory: Mathematical & Conceptual Foundations). The fitnesses of the three genotypes in the model are as follows, where f(XX) denotes the frequency of the XX genotype: w(AA)=1-3*f(Aa)+3*f(aa); w(Aa)=1-s*f(Aa); and w(aa)=1-3*f(Aa)+3*f(AA). As shown in Rice (2004), though entirely deterministic, the model can exhibit chaotic behavior under some values for s
.
1 |
p0 |
Starting frequency for the A allele. |
s |
Parameter that determines the strength of selection against heterozygotes when they are common. |
time |
Number of generations to run the analysis. |
show |
Various options for plotting. |
pause |
Pause between generations. |
... |
optional arguments. Presently, the only optional argument in |
The function creates one of several possible plots, depending on the value of show
.
The use of cobweb plots follows selection
.
The function also invisibly returns an object of class "freqdep"
containing the frequency of the allele A through time, if this was calculated by the selected method. This can be printed or plotted using the corresponding methods. (See examples.)
Liam Revell liam.revell@umb.edu
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