- #1
jena
- 74
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Hi,
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
Thank You
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
o 2 data/expectation pairs (x,E):
( 225. , 433.0 ); ( 208. , 433.0 );
o chi-square = 217.
degrees of freedom = 1
probability = 0.000
• Next we examined Red-eyed females to eosin eyed maleso 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
o 2 data/expectation pairs (x,E):
( 679. , 1426. ); ( 747. , 1426. );
o chi-square = 715. degrees of freedom = 1 probability = 0.000
• 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: Results
o 2 data/expectation pairs (x,E):
( 694. , 1273. ); ( 579. , 1273. );
o chi-square = 642.
degrees of freedom = 1
probability = 0.000
Does 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