Purpose: To examine how well the punnett square predicts random events studied during genetics experiments.
All Lab Writeups Must Be Your Own Work!
Writeups with duplicate tables and graphs will be filed in the blue recycling file at the front of the room!
Planning A:
Question: How well does the Punnett Square predict random events in genetic crosses?
Hypothesis: All you need to do here is write a hypothesis to answer the above question and explain it. Use the information given in class to help support this hypothesis. The hypothesis and explanation should be a paragraph or two in length. The original Parent Generation, F1 and F2 generations should be described. Diagrams/ punnett squares can be used to illustrate the process, but written explanation is required! (Do not do any background info or variables for the planning A section!)
Planning B: Do not do this section!
Data Collection:
Data Analysis & Presentation:
a) Convert each group’s data to a form that can be compared.
b) Analyze results via standard deviation
c) Table of Final Data to Graph (Periods 1-4, Please do your graph on Excel or another computer graphing program!)
d) Graph of Final Data (average for Class results, not individual group results) Choose a type of graph that is useful for comparing % data! Add standard deviation error bars to your graph!
Conclusion & Evaluation:
a) Restate your hypothesis.
b) Report averaged results for class +/- S.D. You could compare these results with those from your group or from other classes.
c) How are the results similar, how are they different to the hypothesis?
d) What does the S.D. mean about your data?
d) Explain results.
e) Analyze experiment. What are potential sources of error in you procedure?
f) Come up with specific procedures that could help us obtain more accurate information. Extra Hint: With experiments involving chance or random events, what can be done to increase the odds of matching the predicted outcome?
[See the following links for help with writing individual sections of your inquiry: [Data Collection], [Data Preparation and Presentation], [Conclusion & Experiment Analysis]. Equations and Formulas to Manipulate your Data With. See the following website for further information on writing up IB lab inquiries: Lab Write-ups . See the following site for examples from your previous Enzyme Inquiry.].