The founder effect is an extreme example of "genetic drift." Genes occurring at a certain frequency in the larger population will occur at a different frequency -- more or less often -- in a ...

The bottleneck effect may be a lingering threat for them ... As Gautschi et al. explain, genetic drift, arguably the most powerful evolutionary force at work in small populations, results from ...

All real populations are finite, and thus subject to the effects of genetic drift. In an infinite population, we expect directional selection to eventually fix an advantageous allele, but this ...