Answer:
DNA can act as the evidence of evolution in many ways. It is the source of information which is carried in every next generation since a very long period of time.
This show the ancestral relationship of one organism with other. This also shows how closely related one organism is to other.
The characters that was present at long time ago will be seen today as well and by comparing the changes in the character since that period of time will also serve as evidence of evolution.
