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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: Pharmacol Biochem Behav. 2012 Aug 27;103(2):253–259. doi: 10.1016/j.pbb.2012.08.019

Figure 1.

Figure 1

LD plot from Haploview 4.1 for EA subjects based on HapMap (phase II) data for individuals of European Ancestry for the (A) OPRD1 and (B) OPRK1 tSNPs examined in this study. Pair-wise SNP |D′| values (×100) of linkage are shown along with 2 haplotype blocks identified using the four-gamete rule. Darkened blocks indicate SNP pairs without evidence of extensive recombination (i.e., 4-gamete rule for haplotype block characterization with at least one 2-SNP haplotype having a frequency < 0.02).