Imagine an island archipelago where all of the islands are founded by individuals heterozygous at a particular locus. If there is no migration or mutation, and the alleles at that locus are neutral, what do you expect the island populations to look like after many generations?
A) Some island populations will have fixed one allele, and other populations will have fixed the other allele.
B) The populations on every island will have fixed the same allele.
C) The island populations will have high levels of genetic diversity at this locus.
D) We cannot predict any outcome because genetic drift is a random process.

Question

Quizplus · Accepted Answer

Over time, genetic drift will cause random fluctuations in allele frequencies on each island. Eventually, some island populations will become fixed for one allele, while others will become fixed for the other allele. This outcome is based on a neutral process and does not require natural selection.

Imagine an Island Archipelago Where All of the Islands Are