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LabBench Contents
Genetics of Organisms
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Introduction
Key Concepts Genetics of Organisms
Design of the Experiment
Overview of the Experiment
Closer Look: Some Common Mutations You May See
Exercise 1: Parental Generation
Exercise 2: F1 and F2 Generations
Analysis of Results
Case 1
Case 2
Chi-Square Analysis of Data
How To Calculate the Expected Value
Calculating Chi-Square
Using the Chi-Square Critical Values Table
Lab Quiz
Bacterial Colonies

Calculating Chi-Square

The formula for chi-square is:
X2 = the sum of

where:
o = observed number of individuals
e = expected number of individuals

Using the data from Case 1, complete this table:

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