polymorphic change

例句：

1. 1. The species is characterized by its polymorphic features.
   这种物种以其多形态特征而著称。
2. 2. Polymorphism is a common feature of many biological organisms.
   多态性是许多生物体的共同特征。
3. 3. The study of polymorphism has led to new insights into the evolution of life.
   对多态性的研究为生命进化提供了新的见解。