Which of the following is not an evidence of evolution?

Polymorphism is not an evidence of evolution. Polymorphism refers to the presence of different forms or types of a trait within a population. While it can be influenced by evolutionary processes such as natural selection or genetic drift, polymorphism alone is not enough to prove that evolution has occurred. On the other hand, fossil records, comparative embryology, and comparative anatomy are all strong evidence for evolution. Fossil records show the progression of life forms over time, while comparative embryology reveals similarities in early development across species that suggest a common ancestry. Comparative anatomy also reveals similarities in the structures and functions of organisms that suggest evolutionary relationships.