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Variation in Eastern Gray Squirrels
Add name
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Background Information
Natural environmental pressures
Human influences on squirrel populations
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Background Information
Squirrel Habitat and food sources
How often do squirrels reproduce and what is the size of their litters
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Background Information
• What is the definition of natural selection
• What are the effects of environmental pressure on natural selection
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Background Information
• What are the effects of adaptations on survival
• What are the effects of variation on survival and reproductive success
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Background Information
• What is meiosis and how does it contribute to new gene combinations
• What is fertilization and how does it concentrate to variation
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Background Information
• How do phenotype and genotype differ using the two types of squirrels as examples
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Background Information
• What is a mutation and what effect could one have on an individual, population, the environment
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Background Information
• What is the relationship between the squirrels and the organism going after them
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Background Information
• Illustrate and discuss the trophic levels of the squirrels and their predators
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Background Information
• What effects can pollution have on the squirrel population, the environment
• What effect can an increase in the squirrel population have on the environment
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Background Information
• What is urbanization and what affect could it have on the environment and/or the squirrel population
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References
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Question and Hypothesis
• Write the question • and your hypothesis:
– If……………. Then ……………….– Or
– I believe …………………. Because …………
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Materials
• List the materials needed for your simulation
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Procedure
• What are the steps to your simulation. Be sure to include– Several generations of squirrels– Data to be collected– How will the data support the hypothesis
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Data
• Insert or construct your data table must also be in your journal
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Data
• Graph your data
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Data Analysis
• Is there any sign of bias• Do you see any trends• Can you make any predictions
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Data Analysis
• Define independent variable, what is yours• Define dependent variable, what is yours• What safety precautions and/or equipment
will you need• What might be some sources of error in
your design• Does the data support your hypothesis,
why/why not
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Data Analysis
• Compare and contrast your simulation to the moth situation
• Place image here
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Data Analysis
• Show the relationship between squirrels eaten and those surviving and reproducing
(ratio and proportion)
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Summary
• Discuss your findings relate your results to populations of gray squirrels
• State the phenotypes of the squirrels• Describe the relationships among
organisms in the forest• Discuss how environmental pressure
affects the squirrel population
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Conclusion
• Does your data confirm, modify or reject yor hypothesis. Use the data to support your answer
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