a. Bottlenecks and the founder effect are two different types of genetic drift. How do they differ? Provide an example of each.
b. The Amish of Lancaster county in Pennsylvania have a much higher frequency of polydactyly (extra fingers and toes) than is found in other parts of the world. This condition is caused by a dominant mutation. All the effected individuals in this population descended from the same person, in whom the mutation apparently originated. Does this situation illustrate a population bottleneck, a founder effect, or natural selection? Give a reason for your answer.