Changes in the gene pool can occur due to various mechanisms. from 1892 to 1954, millions of individuals emigrated (moved out) from countries across the atlantic ocean to the united states. many of these individuals entered through ellis island, a federal immigration station in new york. which mechanism affected the gene pool of the immigrants that entered the united states through ellis island?
a. genetic drift
b. gene flow
c. gene mutation
d. natural selection
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