Given that all the F1 progenies produce violet eggplant which is not present in either of the parents. So the mode of inheritance is Co-dominance. When we perform test cross we get the violet colour and white colour progenies in 1:1 ratio.
Observed(O) | Expected (E) | (O-E) | (O-E)2/E | |
Violet | 160 | 157 | 3 | 0.057325 |
white | 154 | 157 | 3 | 0.057325 |
Total | 314 | 0.11465 | ||
So the Chi-square value is 0.114
the degree of freedom is given by the number of phenotypes - 1
There are two phenotypes that we observed in the cross. So the degree of freedom f is 2-1 = 1
So for the degree of freedom 1 when the p-value is 0.05 CHi-square value is 3.84 which is greater than the observed chi-square value. So out hypothesis correct
2. Fruit color in eggplants is controlled by a single autosomal gene, R, with two alleles...
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