Wright BIO 2110 - Rec6_chi-squared tests (4 pages)

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Rec6_chi-squared tests



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Rec6_chi-squared tests

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4
School:
Wright State University
Course:
Bio 2110 - Principles of Molecular and Classical Genetics
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BIO 2110 Genetics Recitation 6 2 analyses Name Group Members 1 In Eleutheran aquatic swine variation in ear shape results from allelic variation in a single gene The same is true for variation in nose shape Is the dihybrid cross segregation data shown below consistent with independent assortment of these genes Justify your answer statistically P0 pointed ears pointed nose x round ears blunt nose F1 pointed ears pointed nose x F2 pointed ears pointed nose pointed ears blunt nose round ears pointed nose round ears blunt nose 919 273 285 123 pointed ears pointed nose 2 In Eleutheran aquatic swine variation in ear shape results from allelic variation in a single gene The same is true for variation in nose shape i Is the dihybrid cross segregation data shown below consistent with independent assortment of these genes Justify your answer statistically ii Why is the pattern of phenotypic segregation different for this cross than for the cross shown in question 1 P0 pointed ears blunt nose x round ears pointed nose F1 pointed ears pointed nose x F2 pointed ears pointed nose pointed ears blunt nose round ears pointed nose round ears blunt nose 881 315 323 81 pointed ears pointed nose 3 From the data shown below i what is the dominant phenotype for the eye color gene ii what is the dominant phenotype for the eyes absent gene iii are the eye color and eyes absent genes linked Justify your answer statistically P0 F1 yellow eyes red eyes x x F2 red eyes yellow eyes no eyes 887 309 404 no eyes red eyes potentially useless information probability df 0 90 0 50 0 20 0 05 0 01 0 001 1 0 02 0 46 1 64 3 84 6 64 10 83 2 0 21 1 39 3 22 5 99 9 21 13 82 3 0 58 2 37 4 64 7 82 11 35 16 27 4 1 06 3 36 5 99 9 49 13 28 18 47 5 1 61 4 35 7 29 11 07 15 09 20 52 df n 1 p2 parental gamete frequency 1 p T prob12 prob1 x prob2 recombinant gamete frequency p


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