Table 1. Models of background selection with selection on nonsynonymous, weakly selected, and strongly selected noncoding sites.
Model 1 | Standard mapping function with summation over all sites and integration over the distributions of selection coefficients |
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Model 2 | Linear mapping function with summation over all sites and integration over the distributions of selection coefficients |
Model 3 | Approximations using integration over a continuum of sites (with a linear mapping function) |
Model 4 | Approximations using summation of the integrals over each cluster of sites with the same selection regime (with a linear mapping function) and integration over the distributions of selection coefficients |
Model 5 | Approximations using integration along the genome of the integrals over clusters of sites (with a linear mapping function), and first and second moments of the distributions of selection coefficients |