Analysis by quantitative PCR (qPCR) of CNVR36 ( CYP4502 C32 Fragment gene). Twenty-one animals with statistical evidence for CNVR and eight false negative animals from the control group are showed. The horizontal dashed line represents the relative quantification (RQ) value of the reference animal. Each dot represents the relative copy number in comparison to the reference individual. Y-axis shows the RQ value obtained by qPCR. Vertical bars represent the standard error. Breed abbreviations are: Ib: Iberian; Ld: Landrace; Hib: animals belonging to several generations of the IBMAP cross (F1, F2, and BC); Mx: Mexican hairless; Brz: Brazilian local breed; Gu: Guatemala local breed; Yu: Yucatan miniature pig, CC: Cuban creole pig.