Answer:
Evolution
Explanation:
Evolution is a slow and random (uncontrolled) process which changes the heritable characteristics of the generation over time.
The concept of evolution was provided by Charles Darwin when he stated in his book that species changes or evolve. He also provided the mechanism by which the species changes over time and named that mechanism natural selection.
Later it was found that the natural selection evolves the species at the genetic level that is it plays its role at the gene level or it introduces the variation in the genes.
The natural selection process then selects the population with a high survival rate and the population in last evolves.
Thus, evolution is the correct answer.
