Created by StemPy LabTen gulls start a new colony on an island. A mark that is rare on the mainland is very common in the colony after many generations. Which explanation is best?
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← Very light and very dark mice on a pale soil are eaten by owls, which see them easily. Mice of an intermediate shade are rarely eaten. Which type of selection is this, and what happens to the curve of fur shade?Two populations of one species, on a mainland and on an island, have different allele frequencies for one gene. Which change would make them more alike? →
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