Profile of and along a recombining chromosome.

<p>Plots in column A show the distribution of , i.e. when the tree topology is known. Plots in column B show the distribution of the estimate when the tree topology is unknown, but estimated from microsatellite polymorphism data. Each boxplot corresponds to one of marker loci located at the positions indicated on the axis. The regions spans kb in total. Symmetric step-wise mutation model with . Other parameters: , and recombination rate per <i>bp</i> (corresponding to 1 cM/Mb). First row: standard neutral model with constant . Second row: bottleneck model with severity and onset . Third row: Selective sweep at locus with which was completed time units ago. For comparison with the theoretical expectation, the leftmost boxplot in each panel shows the standard normal distribution (labeled ‘N’).