The answer is provided, can someone explain in detail how to go about solving th

Question

The answer is provided, can someone explain in detail how to go about solving this problem using the key.

3. (15 pts) Does the following testcross show statistically significant evidence of linkage between a and b? atb+Xaabb Genotype frequency expected (obs-exp) (obs-exp)*2 Chisquare atb+ aabb atbb aab+ 263 268 240 229 1000 250 250 250 250 1000 13 18 -10 21 169 324 100 441 0.676 1.296 0.4 1.764 4.136 degrees of freedom- 4-1-3 Critical chi-square values- 2.37 (p-0.5), 6.25 (p-0.1), 7.82 (p-0.05) 4.136

Explanation / Answer

The chi square value calculated is less than the chi square table value at 3 degree of freedom at 0.1 and 0.05 so we cannot accept the statistical hypothesis. To accept the hypothesis chisqure value should be greater than table value.

Here the hypothesis is a and b are linked so that we cannot accept the hypothesis and say that the genes a and b are not linked. And they assort independently.

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