Predictions of the BGC model and comparisons with observed values.

The stationary GC-content (GC*) and the half-time of the evolution of GC-content (t1/2) predicted by the BGC model are given for different values of the parameters: model M1 or M2 (see text). N: effective population size. Rec. rate: genome average recombination rate. f: fraction of the genome involved in recombination hotspots. i: average intensity of recombination hotspots (cM/Mb). GC* and t1/2 are also given for genomic regions of low and high recombination (corresponding respectively to the top 10% of lowest or highest recombination rate in the data set). t1/2 is computed assuming that human and chimp diverged 6 Myrs ago.