Wooly Worm Conclusion
A. What were the degrees of freedom used in this exercise? The degrees of freedom used in this exercise was six. B. What confidence level should we use when calculating our chi-square value? (use the table below) C. What is the calculated chi-square (χ2) value? 36 D. Do your results indicate that it was chance alone that caused the unequal numbers of capture wooly worm phenotypes? Explain. There was no chance alone that could cause the unequal numbers of capture wooly worm phenotypes. This causes it to be really significant. E. Which colors of worms were subjected to a positive selection pressure? Which colors of worms were subjected to a negative selection pressure? Explain. The green colored worms such as Burt, String Bean, Olive Garden, and Shrek were subjected positive selection pressure because they have traits that are beneficial. The more vibrant colored worms such as Stripey, Eyelash, and Shaggy were subjected to a negative selection pressure because their traits negate or limit reproductive. F. What do these results indicate might happen over time to this wooly worm population? These results indicate that the green colored worm population will grow over time. G. Consider feeding times, feeding habits, ability to see color, vision acuity, and other possible characteristics of predatory birds in nature. How might such characteristics determine selection of certain worm colors? The worms that are easier to see and do not blend into their surroundings will be eaten determining the selection of certain worm colors. H. Consider the school grounds upon which you “fed” on your wooly worms. If this particular environment remained unchanged over a very long period of time, how would the populations change? What would the community look like in ten years? The population would change to the green colors because they are harder to spot in the grass and they blend into their surroundings.
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