Download Natural Selection Post Lab Analysis and Conclusion

Natural Selection Post Lab Analysis and Conclusion-Make sure you complete this in a format that can be
physically turned in!
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Make a complete graph of your data for both squares and moths.
In your graph, were there equal number of all objects?
Were either extreme phenotype more selected for?
What explains if there was or was not?
How does this activity specifically model economic evolutionary process?
Look at the surviving moths or squares and make a statement about them explaining “differential
reproduction”.
7. What mode of selection would occur if we had an environmental shift to favor really large and really
small squares and really light and really dark moths?
8. What are the 3 outcomes of economic domain pressures on any given species?
9. In order for the one outcome that increases life’s biodiversity, what has to be stopped between the
small and large squares and light and dark moths?
10. What specific type of extrinsic economic factor did the student simulate in this activity?
11. Using both the moths and the squares, illustrate how genetic diversity is modeled.
12. In nature if all large squares or all dark moths execute more favorable traits, how do we preserve
diversity in those features? In other words, how do assure we can still get small squares and white
moths in the population? (Explain genetically)
13. What economic pressure could the student selecting objects be a specific example of?
14. A contemporary of Darwin’s, Jean-Baptiste Lamarck put for the unsupported idea of “The Use-Disuse
Principle”. Darwin’s Theory of Evolution discredited Lamarck. Use evolution to explain how the giraffe
got his long neck.
15. Make a simple graph of the class data to illustrate phenotypes for both square size and moth color.
16. Look at the class collected data for square size, add up all the numbers on either side of the middle
number (do not include the middle number in the count). Based on the data did students choose
smaller or larger squares?
17. How can you explain this outcome?
18. In evolution, organisms can be considered specialists like the cheetah or generalists like the coyote, in
terms of fitness, which group is more at risk if a large economic change occurs? Using the mechanisms
of evolution, explain why.
19. If 100 generations someone saw only small and large squares and dark and light moths, how could one
conclusively determine if in fact that represents 4 distinct species?
20. Is natural selection a random pressure? Why or why not?
21. Is evolution a random process? Why or why not?