Remote oceanic islands are famous for harboring species with unique phenotypes that occur nowhere else. islands that exist near to large continents are much less likely to harbor species with unique phenotypes. in the questions below, explain the roles of genetic drift and migration in establishing this pattern. for the purpose of these questions, assume that selection on continent and island populations acts in exactly the same manner. question 1: explain why populations on remote islands often have unique phenotypes that differ from both populations on large continents and populations on other remote islands.