Anatomy General anatomy 47cd50c8 Double aoa occurs due to A Non development of the right 4th aoic arch B Non development of the left 4th aoic arch C Non division of truncus aeriosus D Persistence of distal poion of the right dorsal aoa High-Yield Explanation Double aoa occurs due to the persistence of distal poion of the right dorsal aoaRef: Inderbir Singh&;s Human embryology; Tenth edition; Pg 257