It is now common to score many thousands of SNPs in numerous individuals sampled from several populations. (See, for example, the results from stickleback fishes shown in Figure 8.8 ). Many of these SNPs are neutral and therefore provide information about rates of migration among populations. SNPs that show unusual patterns of genetic variation may indicate regions of the genome that are subject to selection. a. Will loci involved in local adaptation, such that different alleles are favored in d