Answer :
DNA sequence differences between the two species is the most useful data used by the scientist for the estimation of the molecular clock.
Explanation:
- It is a figurative term used for determining the mutation rate and to deduce the time in the prehistory when two or more lives diverged.
- It has granted paleontologists to reveal the story of the evolution over millions of years.
- If there is any change in the molecular clock it is termed as molecular evolution. If a clock is said to be the good molecular clock only when it contains the evolution of different genes at different rates which helps us to evolve the prehistoric period completely.