Genetic drift is a process of random allele frequency changes in a population over generations due to chance events, such as random sampling during reproduction or small population sizes. One consequence of genetic drift is the loss of genetic diversity. As genetic drift occurs, certain alleles may become more common or even disappear from the population by random chance, reducing the overall genetic variation. This loss of genetic diversity can have various implications, including reduced adaptability, increased vulnerability to genetic diseases, and potential extinction of species in the long term.