Drosophila Melanogaster (Fruit Fly) Lab Report

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The lab report will be graded out of 100 points. Be sure to complete all of the sections.

Write a short lab report using the data below. The lab report is based on the Drosophila dihybrid cross in Exercise 5.

Write a few paragraphs in the following format:

  1. Abstract: Summarize your paper in one paragraph.
  2. Introduction –write any background information including the description of the experiment, and stocks used. State your hypothesis here.
  3. Results: Let’s assume in the F2 generation, the following results were obtained:
    Drosophila Dihybrid Cross-F2 Results

Wildtype- 1750
Vesitigial- 535
Ebony-500
Ebony and Vestigial- 150

A) Write down all crosses set up to obtain this results (use the lab manual). Deal with one cross at a time: P l, Fl, F2. Set up a Chi square table with the results above.
B) Calculate Chi-square and p-value for the results. State whether you will accept or reject your hypothesis.

  1. Discussion -discuss your results in context of what is known about autosomal inheritance patterns in Drosophila and you understanding of your hypothesis

Sample Solution

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The population of Eastern Europe

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  1. Why did the population of Eastern Europe decline following World War 2? Expain your anser in a paragraph with supporting examples.
  2. What accounts for the extreme variations in temperature and low levels of percipitation that occur in much of the interior of Russia?
  3. Identify four characteristics that made the Northern European Plain attractive to early settlers and list the advantages for each.
  4. Read the excerpt from an article the global water crisis. Do you think Northern European countries have done enough to protect the Baltic Sea ecosystem? Write a paragraph explaining your reasoning, using examples to support your response.
    “But there is a new danger to the eagle and many other marine species:An explosion of microscopic algae called phytoplankton has inundated the Baltic’s sensitive waters, sucking up oxygen and choking aquatic life. Though a natural phenomenon at a smaller scale, these blooms have recently mushroomed at an alarming rate, fed by nutrients such as phosphorous and nitrogen from agricultural fertilisers and sewage.”
    -James Owen, ”World’s Largest Dead Zone Suffocating Sea,” National Geographic News, March5, 2010

Sample Solution

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United States in the later 20th century

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Artists working in the United States in the later 20th century continued to develop the innovative sensibilities of their mid-century forebears, challenging audiences with ever -changing notions of the appearance and the purpose of ‘Art.’ In consideration of the given image, please compose a response* that addresses the following points:

  • What about this work references the ‘Abstract Expressionism’ movement? Consider paintings of the later 1940s/early 1950s by artists such as Pollock, Krasner, and Lewis.
  • How is this work also a rejection of the ‘formalist purity’ that was celebrated in association with Abstract Expressionist paintings? Describe what you see that ‘goes beyond’ a painting.
  • How do you interpret this piece in relation to its specific context? What does the artist seem to communicate about ‘life in urban America’ in 1955?

Sample Solution

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Article; “The Canadian Climate”.

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Read McHayle, D. “The Canadian Climate”.
How is this essay organized? Is the essay effective in terms of this pattern?
Compare and contrast the patterns of organization with the essay “Shopping Around”.
(A. Hencz.)
Which of the two essays is most effective in engaging readers and providing substantiation for the thesis?
Discuss the advantages and disadvantages of researching and writing comparative essays.

Sample Solution

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