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4. Alleles A/a and B/b are alleles from two different loci. A cross between AaBb x AaBb will produce offspring with expected phenotypic ratio of 9:3:3:1. Assuming the results in Table 5 were obtained from a dihybrid cross. Complete Table 5 and calculate X². Table 5. Results of dihybrid cross. Genotype | Observed Number (O) | Expected Number (E) | Deviation (O - E) | (O - E)² | (O - E)²/E A-B- | 429 | | | | A-bb | 81 | | | | aaB- | 89 | | | | aabb | 41 | | | | Total | 640 | | | | X² = The expected probability of aabb = Degrees of freedom (df) = p-value range = __ You reject / fail to reject the null hypothesis of the chi-square test. (circle the answer)

          4. Alleles A/a and B/b are alleles from two different loci. A cross between AaBb x AaBb will produce offspring with expected phenotypic ratio of 9:3:3:1. Assuming the results in Table 5 were obtained from a dihybrid cross. Complete Table 5 and calculate X².
Table 5. Results of dihybrid cross.
Genotype | Observed Number (O) | Expected Number (E) | Deviation (O - E) | (O - E)² | (O - E)²/E
A-B- | 429 | | | | 
A-bb | 81 | | | | 
aaB- | 89 | | | | 
aabb | 41 | | | | 
Total | 640 | | | | X² =
The expected probability of aabb = ______
Degrees of freedom (df) = ______
p-value range = ______
You reject / fail to reject the null hypothesis of the chi-square test. (circle the answer)

4. Alleles A/a and B/b are alleles from two different loci. A cross between AaBb x AaBb will produce offspring with expected phenotypic ratio of 9:3:3:1. Assuming the results in Table 5 were obtained from a dihybrid cross. Complete Table 5 and calculate X².
Table 5. Results of dihybrid cross.
Genotype | Observed Number (O) | Expected Number (E) | Deviation (O - E) | (O - E)² | (O - E)²/E
A-B- | 429 | | | |
A-bb | 81 | | | |
aaB- | 89 | | | |
aabb | 41 | | | |
Total | 640 | | | | X² =
The expected probability of aabb =
Degrees of freedom (df) =
p-value range =
You reject / fail to reject the null hypothesis of the chi-square test. (circle the answer)

Added by Christian D.

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