Question

QUESTION 11 The following table shows the observed and expected crossover and non-crossover asci for the tan and gray spore genes of Sororia fimicola from across between the two mutants. Use the chi-squared test to determine if the gene - Centromere estimated distance is significantly different from the published map distances. 13 pt) Tan Spore Gene Gray Spore Gene Ascl Crossover observed Non-crossover, observed Crossover expected Non-Crossover, expected 124 139 0.54 x320) = 177 1045 x 328) 151 (0.66 X 326) 0.34 x 32B) 216 112 only the gray spore gene is significantly different only the tan spore gene is significantly different both genes are significantly different neither gene is significantly different

Answer 1

Tan spose gene 189 Expected 0-E) 10-E2 Csossover Obseuved 2 tET 81 Non cyossovCH 6.95 12 139 151 Ob seHved Chisquaie value fox Tan spou gene = 6

6-E G Ray spora gene 204 exbe 13-0) C7ossoveH Obseved 12 14f Non-uossoO 28 24 12 Obseived 2x294 Chisquare value for Glay Spove gene- I9 = n- Nou degea o fuedom LTwo vasiable 2- Check the ùtical value pvom chisquase table P 3.841 at df = gn both the Case Calculatad Chisquaa value is less than 3.84 Tan gene 63.84

In both the case Calculoted Chisquaro valuee Is less than 3.84 data is not significanty dfent that So we accept Tan gene 63.84 943.84 Gay X2 A option o corret gine is gnfcanty dleunt Neithey