All Old Order Amish families from Lancaster County with Ellis-van Creveld syndrome can trace their genealogies to Mr. and Mrs. Samuel King, who immigrated to Lancaster County in 1744. This is an example of __________.

Question

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This is an example of founder effect, which occurs when a small group of individuals establishes a new population, and their limited gene pool leads to increased frequency of certain alleles or disorders. In this case, all individuals with Ellis-van Creveld syndrome can trace their genealogy to a single couple who immigrated to Lancaster County in 1744.

All Old Order Amish Families from Lancaster County with Ellis-Van