balanced polymorphism
常见例句
- Thus, a genetic polymorphism of species in a balanced equilibrium cannot be established.
因此于 平衡状态下，物种之「基因多态性」并无法完成。
http://dj.iciba.com - If it does, such an advantage probably pertains only when psychopaths are in the minority (a state of affairs known to biologists as a balanced polymorphism).
ECONOMIST: Evidence that psychopaths are born, not made 返回 balanced polymorphism