Evolution of vector concept

Evolution is

Evolution is

Evolution is :

Ultimate source of organic variation is the process which provide raw materials for evolution is Or The concept of sudden genetic change which breeds true in a species is represented as

Give the three key factors of the modern concept of evolution

Branching descent and natural evolution are the two key concepts of Darwinian theory of evolution . Explain each concept with the help of a suitable example

List the three key factors of modern concept of evolution