Compare and contrast the theories of evolution proposed by Darwin and Hugo De Vries.
Answers
The Darwin's theory of evolution is based on natural selection while Huge De Vries theory is based on mutations. In Darwin's theory he proposed that minor variation cause evolution which are small and directional, while Huge De Vries proposed that mutation cause evolution which are random and directionless. According to Darwin evolution is a gradual process while according to Huge De Vries evolution is cause by sudden mutation.
According to Hugo de Vries, new species arise due to single step large mutation whereas according to Darwin, evolution occurs gradually by the method of natural selection.
Darwin believed that minor variations are the cause of the evolution and his theory is based on the natural selection.
On the other part, Hugo de Vries believed that mutation is the cause of evolution, and his theory is based on the mutation.