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Variation in Eastern Gray Squirrels

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Variation in Eastern Gray Squirrels Add name Tamera Williams [twilliams_at_chimes.org] Background Information Natural environmental pressures Human influences on ... – PowerPoint PPT presentation

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Title: Variation in Eastern Gray Squirrels


1
Variation in Eastern Gray Squirrels
  • Add name

2
  • Tamera Williams twilliams_at_chimes.org

3
Background Information
  • Natural environmental pressures
  • Human influences on squirrel populations

4
Background Information
  • Squirrel Habitat and food sources
  • How often do squirrels reproduce and what is the
    size of their litters

5
Background Information
  • What is the definition of natural selection
  • What are the effects of environmental pressure on
    natural selection

6
Background Information
  • What are the effects of adaptations on survival
  • What are the effects of variation on survival and
    reproductive success

7
Background Information
  • What is meiosis and how does it contribute to new
    gene combinations
  • What is fertilization and how does it concentrate
    to variation

8
Background Information
  • How do phenotype and genotype differ using the
    two types of squirrels as examples

9
Background Information
  • What is a mutation and what effect could one have
    on an individual, population, the environment

10
Background Information
  • What is the relationship between the squirrels
    and the organism going after them

11
Background Information
  • Illustrate and discuss the trophic levels of the
    squirrels and their predators

12
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

13
Background Information
  • What is urbanization and what affect could it
    have on the environment and/or the squirrel
    population

14
References
15
Question and Hypothesis
  • Write the question
  • and your hypothesis
  • If. Then .
  • Or
  • I believe . Because

16
Materials
  • List the materials needed for your simulation

17
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

18
Data
  • Insert or construct your data table must also be
    in your journal

19
Data
  • Graph your data

20
Data Analysis
  • Is there any sign of bias
  • Do you see any trends
  • Can you make any predictions

21
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

22
Data Analysis
  • Compare and contrast your simulation to the moth
    situation
  • Place image here

23
Data Analysis
  • Show the relationship between squirrels eaten and
    those surviving and reproducing
  • (ratio and proportion)

24
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

25
Conclusion
  • Does your data confirm, modify or reject yor
    hypothesis. Use the data to support your answer

26
Images
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