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21-12-2022
Biology

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Peromyscus polionotus is a species of oldfield mice that recently (6,000-10,000 years before present) invaded the islands off of the coast of northwestern Florida. Mice that live on the mainland are dark brown, matching the dark, loamy soil, while the subspecies of mice that live on the white sandy beaches have much paler coloration. Briefly explain how the lighter coloration in the subspecies evolved.

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