Fig. 3From: Diagnosis of diabetes insipidus observed in Swiss Duroc boarsPedigree of five Duroc boars affected by polydipsia and polyuria. All the cases (shown in black) can be traced back to a particular number of common ancestors. The closest common ancestor is shown in the figure (labelled with an arrow). It’s a boar which is 3, 4, 4, 5 and 6 generations away respectivelyBack to article page