A 35-year-old pregnant diabetic woman presented in labor and delivered a baby girl without complications. However, a few hours later the newborn presented with cyanosis and shortness of breath. An echocardiogram showed a pulmonary artery arising from the posterior left ventricle along with a ventricular septal defect (VSD). The best description of the pulmonary abnormality is a failure of the aortopulmonary septum to turn in a spiral during development. Additionally, a researcher employed site-directed mutagenesis on a gene important for ureteric bud development in a rat embryo, resulting in an abnormal embryo that was stillborn. The abnormal structure affected was the collecting duct.