Figure 1

The amount of admixture linkage disequilibrium (ALD) expected under the continuous gene flow (CGF) and hybrid isolation (HI) models of admixture for unlinked loci and loci linked at 5 cM. The results shown are for two loci with δ = 0.54 and 0.49, and with 50 per cent admixture in the first generation for the HI model and 1.9 per cent admixture for 36 generations under the CGF model (equivalent to 50 per cent total). ALD under the HI model decreases for both linked and unlinked loci, whereas ALD under the CGF model for both linked and unlinked loci increases initially and then decreases (adapted from Pfaff et al., 2001 [15])