A striking example is found on the island of Tristan de Cunha.
A striking example is found on the island of Tristan de Cunha. Settled by fifteen people in 1814, as of the late 1960's their 240 descendants displayed four cases of retinisis pigmentosa, a rare form of progressive blindness, and nine were known to be carriers. If a few individuals from any population are isolated, they are unlikely to have the same frequency of alleles as the parent population and this type of genetic drift occurs. FTP, name it.
A striking example is found on the island of Tristan de Cunha.
{founder} effect