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Fruit Fly Lab Report

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Basics Completed individually – everyone’s should be different except for combined data Typed Due 1/20 or Earlier – on paper, unless “printer broken” then email 40 points

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Format Top: Amy Fansler Other group members 6D Flies 1/20/2011 4 th Period PHH The Outcome of Crossing Vestigial Wings with Wild Type Flies

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DO. NOT. PLAGIARIZE! This means COPYING and PASTING without citing!!!! I WILL BE ABLE TO TELL I WILL GOOGLE SEARCH YOUR SENTENCE YOU WILL BE PENALIZED.

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Introduction Describe Drosophila Why we use it The traits you are studying (wild type, sepia, white, vestigial, etc.) List possible genotypes and phenotypes of flies from parental flies Exceeds expectations…

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Intro, Continued Research Question = what are you trying to find out??? Example: “If two parent flies are heterozygous for Vestigial Wings, should their offspring conform to a 3:1 ratio??” – Ww x Ww = 3: W- and 1: ww What traits are you studying?

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Intro, continued Hypothesis – What proportion do you think the offspring should come out to? – This should be the “expected” proportion – Ex: 3:1, or 9:3:3:1 for dihybrid

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Intro, continued Predictions – Show punnett squares of your P, F1, and F2 flies – Summarize expected proportions/percentages – This explains your hypothesis Questions so far???

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Materials What equipment did you use? What was the purpose of that equipment? List in bullets – not paragraph form

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Methods Same as procedure What steps did you take to do this experiment each day?

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Results Table format Example Data: F1 Flies: 16 Wild Type Wings, 0 Vestigial Wings F2 Flies: 39 Wild Type Wings, 4 Vestigial Wings F1F2 Wild Type Wings1639 Vestigial Wings04 Total Flies1643 Proportion or Percentage 100% Wild Type90.6% Wild Type, 9.3% Vestigial *Remember, our expected outcome was 3:1 or 75% to 25%

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Chi Square Analysis We will do this later once everyone has their data It is to see how reliable your data is… or how much error there was in your experiment…

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Conclusion Dominant/Recessive? Autosomal/Sex-Linked? Why do you say this?? Cite your data – “Since there were no vestigial wings in the F1 generation, but there were in the F2 generation, this leads us to believe that vestigial wings are recessive.” Yadda yadda. You will “accept” or “reject” your hypothesis based on the chi square analysis we do later Did it follow the expected outcome?

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Resources ANYTHING you use from the internet Citationmachine.net gives you citation MLA format Number them, and use numbers during introduction/conclusion.

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Grading Final CUMULATIVE exam = 60 points Lab report = 40 points -5 points for each day late Introduction = 15 points Materials and Methods = 5 points Results = 10 points Conclusion = 5 points Resources = 5 points

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