adj.对人类有不良影响的；非优生学的
Fascia bands type: removing the dysgenic dartos fascia band and moving up the penoscrotal spot and make a Y-V plasty. 纤维索带型：切除松解阴茎背侧挛缩的筋膜，上移阴茎阴囊交界部行“Y-V”成型术；
dysgenic trend theory 劣生趋势理论
cacogenic(dysgenic) 劣生的, 退化的, 发育不全的
dysgenic milk 劣种牛奶
n.劣生学；种族退化学
