Microevolution is change in allele frequencies in a species or small group, over a relatively short period of time. Natural selection and genetic drift are agents of microevolution. Natural selection is a process of editing in nature whereby individuals with certain inherited genotypic characteristics have higher chances of survival and of successful reproduction than others, because of these traits. The organisms that are best suited for their environment live and pass their beneficial traits in rising numbers on to consecutive age groups resulting in the population evolving over time. It is a descent with alteration from a common ancestor that has led to today’s rich diversity. Those less adapted go extinct. Genetic drift is a chance fluctuation
