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Survival of the fittest

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? Table #1 Unchecked Growth Generation 1st 2nd 3rd 4th Black mice 10  20 40   80 Spotted mice 10  20  40  80 Stippled mice 10  20  40 80  Total Mice 30 60 120 240 Table #2 Hawk Predation Generation 1st 2nd 3rd 4th Black mice 10  12  10 16  Spotted mice 10  10  14  8 Stippled mice 10  8 6   6 Total Mice 30 30 30 30 Table #3 Random Death by Fire Generation 1st 2nd 3rd 4th Black mice 10  10  12  22 Spotted mice 10  14  18  8 Stippled mice 10  6  0 0  Total Mice 30 30 30 30 Part I: Unchecked Growth a. What would have happened to your mice population without predation? Without predation, the mice would continue reproduce causing an excessive amount of them in the grassland. Part II: Predation by Hawks b. What effect does predation have on the mice population size? a. Predation regulates the population of mice and for as fast as they reproduce, predation is a must. c. Are there any other factors that limit the growth of natural populations? a. Diseases and natural causes can limit population. If a natural cause, i.e. a fire, destroys the mice food supply and shelter then that is limiting the natural growth rate. d. Do all members of the population in your model get to reproduce in this situation (with predator present)? If not, what proportion? a. Yes. All members of the population were able to reproduce with a predator present. e. Are all individuals in the population in your model exactly the same? If not, how were they different? a. No. They vary in the color of their fur. f. Are all traits equally favorable in a particular environment? Explain. No. Certain colors of the fur can better camouflage an animal from predators while other certain colors can make them much more visible. g. In this situation (predator), is there a relationship between (1) the chance to survive and reproduce and (2) the traits an organism possesses? a. Yes. If an animal has a fur color that blends better with the surrounding environme

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