After performing a standard monohybrid cross, you calculate the chi square value. When determining the corresponding p value, what degrees of freedom should you use? Select one: 5 3 4 2 1
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Can you do a chi squared test on a monohybrid cross? If so, how many Degrees of Freedom?
Lochan U.
A geneticist is conducting an experiment by making a testcross. She expects the offspring of the testcross to result in a 1:2:1 phenotypic ratio. She wants to see if her data for the three phenotypic classes could be reasonably assumed to have deviated from the expected values by chance. How many degree(s) of freedom should she use when evaluating the chi-square goodness-of-fit test? Select one:
Jennifer H.
e. Calculate the degrees of freedom Percentage Points of the Chi-Square Distribution Degrees of Freedom 1 2 3 4 5 Probability of a larger value of x2 0.90 0.75 0.50 0.25 0.10 0.016 0.102 0.455 1.32 2.71 0.211 0.575 1.386 2.77 4.61 0.584 1.212 2.366 4.11 6.25 1.064 1.923 3.357 5.39 7.78 1.610 2.675 4.351 6.63 9.24 0.99 0.000 0.020 0.115 0.297 0.554 0.95 0.004 0.103 0.352 0.711 1.145 0.05 3.84 5.99 7.81 9.49 11.07 0.01 P-value 6.63 9.21 Critical 11.34 13.28 value 15.09 Which is the correct degrees of freedom calculation? Circle the correct answer (0.25 point) a) 3 genotypes - 2 alleles = 1 b) 3 genotypes - 1 allele = 2 c) 3 alleles - 2 genotypes = 1 d) 3 alleles - 1 genotype = 2 f. What is the correct p-value. Circle the correct answer. (0.5 point) a) P<0.05 b) P>0.05 c) P=0.05
Madhur L.
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