Fig. 1From: Pedigree analysis of atrial fibrillation in Irish wolfhounds supports a high heritability with a dominant mode of inheritanceAn Irish Wolfhound family pedigree that supports a dominant mode of inheritance for atrial fibrillation. Square = male. Circle = female. White = no atrial fibrillation over eight years of age. Black = diagnosed with atrial fibrillation at any age. Question mark = no cardiac phenotype information available to classify as affected or unaffectedBack to article page