I'll have to admit that I poorly understand genetic drift in practical terms, even after seeing it illustrated in college textbooks. It's a pretty basic concept, I'm sure.
Let's say the "bottleneck effect" or the "founder effect".
I understand Genetic Drift to be the change in the number/frequency of a gene variant (allele) in populations randomly.
Are the "bottleneck" and "founder" effects examples of how genetic drift affects a population? Or are they entirely different things, only such that Genetic Drift exerts a larger effect on the population that is reduced?