Figure 8. Decay of linkage disequilibrium (LD) with time for four different recombination fractions (θ). For unlinked loci (θ = 0.5), LD decays rapidly within a small number of generations. For closely linked loci (θ < 0.05), the decay in LD is extremely slow. Abbreviation: D = coefficient of LD (Mackay and Powell, 2007).