Allelic Segregation Research Paper

Mar 16th, 2015
Price: $30 USD

Question description

Data from fly crosses:

Parental cross of red-eyed females X white-eyed males:

F2 class  number

white-eyed males  227

red-eyed males  256

white-eyed females    0

red-eyed females  534

Parental cross of white-eyed females X red-eyed males:

F2 class  number

white-eyed males  168

red-eyed males  203

white-eyed females  223

red-eyed females  183

Instructions: Lab Procedures 

Use a 12 point font and 1” margins.  Double space everything and DO NOT right justify the document.  No other style will be accepted.

Your research paper should have seven sections, each labeled with capital letters centered above the section on the page.

Title Page:  Title, Name, Address (Biology Department, . .).  This page should be separate from the rest of your paper.


  Prepare a very short description of your experiment, the results, and your interpretation.  The abstract should be no more than 200 words and should have some elements of the Introduction, Methods, Results, and Discussion.  It should give the reader a general idea of the experiment performed and the major conclusions, and must stand alone as a clear summary of your experiment.


  This section should introduce your experiment to the reader.  It should start very general, explaining the rationale for the experiment and why it is important.  It should end very specific by stating one or more hypotheses to be tested in the experiment and associated predictions.  Be concise but thorough, and be sure you only write about information that is directly related to your experiment.


This section should describe the experimental design, the methods you used to execute the experiment, and the methods you used to analyze your data.  You should include enough detail that the reader can repeat even the details of your experiment.


This section should report the results of your experiment.  Usually both a text explanation and tables and/or figures are used to report results.  In your text, you should refer to your tables and/or figures by number.  For example, you might say, “Table 1 shows the number of white-eyed and red-eyed flies in the F2 generation,” or, “More white-eyed females than white-eyed males were observed in each generation (Figure 1).”  Figures are graphs, drawings, maps, photographs, etc.  Tables are rows and columns of data.  Tables should NOT contain grid lines separating rows and columns; use formatting tools such as those in Microsoft Word instead.  Figures and Tables should be on separate pages and be put at the end of the paper.  Figures should have a short caption BELOW the graph, drawing, etc.  Tables should have a short explanatory title ABOVE the table.  Captions and titles should contain enough information about the figure or table that the reader understands what it is showing without having to refer to the text.

The results section is for reporting the data in a way that is easy and meaningful for the reader.  Do NOT interpret how your results support or reject your hypothesis here.


  The discussion is where you will interpret your data and how they support or conflict with your hypothesis.  It usually starts very specific and ends very general.  A good discussion should include the following:

·  Interpretation of the data in light of your hypothesis.  (I.e. do the data support or reject predictions of your hypothesis, and what can we thus conclude about the hypothesis?)  Note that statistical “hypothesis tests” really refer to predictions based on your hypothesis.  A hypothesis is expressed in terms of underlying biological causes (e.g. the genetic basis for variation in a trait).  A prediction is what we expect to observe if the hypothesis is true (e.g. a particular segregation ratio in F2 progeny of a cross).

·  Potential weaknesses of your experimental design.

·  Potential problems with your methods.

·  Discussion of how your study adds to our understanding of the general problem you are studying.

·  Recommendations for further studies.

Tutor Answer

(Top Tutor) Dickens I644
School: Cornell University

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