Figure 4.

Boxplots of the Z-scores of the f₃ statistic for Mexican wolves (MW) when compared with either domestic dog breeds (dog), European gray wolves (EUGW), North American gray wolves (NAGW), or all populations of wolves (wolf). The statistic is in the form f₃(X;A,B), where significantly negative values (Z-score ≤ −4) indicate that X is a result of admixture between A and B. Because CL wolves are known to be admixed between the Mexican wolf captive populations, the significantly negative scores for CL wolves are as expected. MB = McBride, AR = Aragón, GR = Ghost Ranch, CL = cross-lineage. See online version for full colors.