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My Question:

Problem 1. The expected phenotypic ratios for each of the crosses below is 1:1. Determine whether the observed ratios are differ significantly (p < 0.05) from the expected.

View attachment Table 1.doc

I used a Chi Square test to help me determine that answer and found the there is no probability of any of them correct.

Answers:

•Let’s first examine white eyed females to red-eyed males

o We found that X2: Results• Next we examined Red-eyed females to eosin eyed males

o 2 data/expectation pairs (x,E):

( 225. , 433.0 ); ( 208. , 433.0 );

o chi-square = 217.

degrees of freedom = 1

probability = 0.000

o We found that X2: Results• Finally we examined Eosin-eyed females to white eyed females

o 2 data/expectation pairs (x,E):

( 679. , 1426. ); ( 747. , 1426. );

o chi-square = 715. degrees of freedom = 1 probability = 0.000

o We found that X2: ResultsDoes answer seem correct?

o 2 data/expectation pairs (x,E):

( 694. , 1273. ); ( 579. , 1273. );

o chi-square = 642.

degrees of freedom = 1

probability = 0.000

Thank You

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# Chi-Square Test

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