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Principle #1- Genetic Variation Variation exists within the mice community. There are black and light grey mice.
Principle #2- Overproduction and the Struggle to Survive Mice will always produce more offspring than the environment can handle. Not all will survive.
Principle #3- Differential Survival and Reproduction The grey mice are easier for the hawk to see. The black mice camouflage well and do not get seen
Principle #3- Differential Survival and Reproduction Because the black mice camouflage better, they survive long enough to reproduce.
Principle #4- Change in the Gene Pool Because the black mice have a higher fitness, over time the frequency for the black allele will increase over time.
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