Beliefs such as these caution anthropologists against narrow biogenetic explanations for the incest taboo and pose severe impediments to a universal definition.

• 类似的这种信仰，也提醒了人类学家不能对乱伦禁忌仅从生物遗传的角度做出一方面的狭隘解释，也正因如此，乱伦禁忌很难获得一个普遍的定义。