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Principle #1 Genetic Variation: There are two types of mice. one has a fur color of tan and the other has a fur color of brown.
Principle #2 Overproduction & the Struggle for Existence: there are too many brown mice for the sandy desert. brown mice sttuggle to surviv and reproduce.
Principle #3 Differential Survival & Reproduction: Tan mice stay on the sandy desert to camouflage to avoid predators hunting. it will reproduce and pass on its genes.
Principle #4 Change in Gene Pool: The favorable trait, staying on the sandy desert, will be on the gene pool as the majority over time.
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