The term "maldevelopment" is an adjective used to describe a situation or condition where something fails to develop, grow, or progress in the way that it should. Full definition
Ectodermal defects: any of a multitude of abnormalities arising from maldevelopment of the fetal ectoderm (e.g., skin, nervous system, eyes). (thedogplace.org)
Retinal dysplasia is abnormal development of the sensory retina with focal folds or widespread geographic maldevelopment. (eyecareforanimals.com)
Now associating ho.mose.xuality with «behavioral abnormalities» seems to be a stretch and I would think that any correlation between gay orientation and «maldevelopment of prefrontal cortical and ventral striatal dopamine systems» would be well docu.mented by now. (religion.blogs.cnn.com)