Question

The disproportionately high appearance of polydactylism among the Amish suggests that _______.
a.
it is a common mutation
b.
it is a common birth defect in Pennsylvania
c.
it was overrepresented in the gene pool of the original Amish settlers
d.
humans are prone to this birth defect


Please select the best answer from the choices provided

A
B
C
D

Answer 1

C

The high rate among the Amish reflects a founder effect — the trait was overrepresented in the gene pool of the original settlers and persisted in this relatively isolated population.