Exacerbated by inbreeding, name this concept, the change in gene frequencies in a small population due to random chance.
The domesticated golden hamster has been subject to this principle since 1930, and Wright-Fisher is the standard mathematical model of it. The high incidence of deafness on Martha's Vineyard is attributed to this principle, which Motoo Kimura argued has a more significant role in evolution than natural selection. The extremely low genetic variation among African cheetahs can be explained by the bottleneck type of this principle, which also applies to the prevalence of polydactyly (lah-lee-DAAK-tih-lee) among Pennsylvania's Old Order Amish whose founding  population was quite small. Exacerbated by inbreeding, name this concept, the change in gene frequencies in a small population due to random chance.
The domesticated golden hamster has been subject to this principle since 1930, and Wright-Fisher is the standard mathematical model of it.
{genetic drift} [accept {allelic drift;} prompt on {bottleneck effect} before “bottleneck”; prompt on {founder effect} before “founding”]