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 Dunkers are genetically unique and differ in gene frequencies, at many loci, from all other populations including their original homeland. Which of the following likely explains the genetic uniqueness of this population?A) sexual selection and inbreeding depressionB) heterozygote advantage and stabilizing selectionC) population bottleneck and Hardy-Weinberg equilibriumD) mutation and natural selection

When members of a population interbreed (marry one another), genes are recombined and spread in the entire population resulting in gene flow. However, the Dunkers family decision not to intermarry would prevent gene flow, rather favor the NATURAL SELECTION of some genes, making the DUNKERS family genetically unique from the remaining population

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