The Dunkers are a religious group that moved from Germany to Pennsylvania in the mid - 1700s. They do not marry with members outside their own Immediate community. Today, the hunkers are genetically unique and differ in gene frequencies, at many loci, from all other populations including those in their original homeland Which of the following likely explains the genetic uniqueness of this population?

population bottleneck and Hardy Weinberg equilibrium
heterozygote advantage and stabilizing selection
mutation and natural selection
founder effect and genetic drift
heterozygote advantage and sexual selection

The dunkers are those who are a religious group of people who have moved from the Germany to the state of Pennsylvania in the mid-1700 s. They don't marry outside their community.

And as of now, they are considered to be genetically strong from the rest of the populations as they signify the founder effect and traces of interbreeding with genetic drift.

This occurs to a very small number of people in the larger populations. Thus making them unique and resistant to the others.