Phenotype O E O-E (O-E)2 (O-E)2 /E R-Su- 348 R-susu 119 rrSu- 139 rrsusu 42 Totals a. In interpreting this y2 value, you have degrees of freedom. b. In this case, do you accept/reject the hypothesis that these data approximate the dihybrid F2 ratio with independent assortment? c. What is the probability that the deviations are due to chance alone? d. Hypothesis x2 Value P Value Accept/Reject 3 R-: 1rr 3 Su-: 1 susu
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In the dihybrid testcross of maize, the following results were obtained: R-S-, 134; R-ss, 150; rrS-, 146; rrss, 168. Complete the following table and answer the related questions. Instructor's calculation of X^2 = 3.9799 a. In interpreting the X^2 value, you have ________ degrees of freedom. b. In this case, do you accept/reject the hypothesis that these data approximate a dihybrid test cross ratio with independent assortment? c. What is the probability that the deviations are due to chance alone?
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In a dihybrid test cross, the following results were obtained: A-B-, 121; A-bb, 107; aaB-, 115; and aabb, 93. Do these data points approximate a dihybrid cross ratio with independent assortment? Complete the table and answer the questions: Phenotype O E (O-E) (O-E)2 (O-E)2/E A_B_ 121 - - - - A_bb 107 - - - - aaB_ 115 - - - - aabb 93 - - - - Totals - - - - 4.0367 a. In interpreting this X2 value, you have _____ degrees of freedom. b. In this case, do you accept/reject the hypothesis that these data approximate a dihybrid test cross ratio with independent assortment? c. What is the probability that the deviations are due to chance alone?
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