Answer:
Genetic drift
Explanation:
Shifts from generation to generation within the same gene pool are called micro evolution.
Due to gene flow,natural selection, mutation, and genetic drift, Allele frequencies in population may shift. These are recognized as four fundamental powers of evolution
Because of random chance, there is genetic diversity in that population's allele levels in genetic drift. A small population would thus allow for a greater chance of sampling error and a shift in allele frequencies would result in a misrepresentation of gene pool of the parent generations.The evolutionary process is mischaracterization of allele frequencies that cause population change.
