Answer:
The description is summarized throughout the clarification section below, as per the particular circumstance.
Explanation:
Darwinism:
The principle that animals evolve through unpredictable genetic mutations as well as natural selection throughout time.
Genetic mutations:
Throughout the DNA sequence which contains the genetic code, a gene mutation seems to be an irreversible improvement, and as such, the sequence varies from what could be seen in other humans.
Natural mutation:
Natural selection, a mechanism whereby an individual, by actively reproducing variations through its genotype, needs to adapt towards its environment.