Genetic Drift example video

This video gives an example of Genetic Drift by showing the Founder Effect and the Bottleneck Effect. The Founder Effect is shown by the 4 people at the beginning being the smaller population, with 25% having the green skin disorder, compared to a higher population.Then the Bottle Neck effect is shown by there being more normal people than the people with the disorder, and then a natural disasteyr happens, reducing the population size by at least 1 generation.