If these two genes were assorting independently, then the cross Mm Ll x mm ll would produce progeny of the phenotype ML, Ml, mL, and ml in a 1:1:1:1 ratio.
To calculate the Chi-square statistic:
Progeny | Observed (O) | Expected (E) | O - E | (O - E)2 | (O - E)2/E |
---|---|---|---|---|---|
Hissing, Loritol Resistant (M L) |
111 | 121 | -10 | 100 | 0.826 |
Hissing, Loritol Sensitive (M l) |
127 | 121 | 6 | 36 | 0.298 |
Mute, Loritol Resistant (m L) |
139 | 121 | 18 | 324 | 2.678 |
Mute, Loritol Sensitive (m l) |
107 | 121 | -14 | 196 | 1.62 |
Total | 484 | = 5.422 |
At 3 degrees of freedom, the Chi-square value at 95% confidence level is 7.815. Since this value is less than the critical value, the two alleles are assorting independently.
In a mythical insect called the Sorefly, the dominant allele, L. is responsible for resistance to...
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