Genetic drift is a change in the gene pool due to chance. Genetic drift increases as the population decreases. What accounts for this relationship is?

Genetic drift is the change or mutation in the gene pool over generations. It can take several generations for a genetic drift to take place in a community. But if the population of that generation is smaller, there are higher chances that the genetic drift would occur over the next very generations. Any mutilations that disrupts the natural course of genetic transfer can cause genetic drift to take place in those species.