Variation in Eastern Gray Squirrels

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Variation in Eastern Gray Squirrels

• Add name

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• Tamera Williams twilliams_at_chimes.org

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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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Images