BIO 340 Activity #5 Spring A 2024

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School

West Virginia University *

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Course

340

Subject

Biology

Date

Apr 3, 2024

Type

pdf

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Uploaded by BarristerHeat6670

BIO 340 Activity # 5: Hardy-Weinberg and Chi-square analysis Created by Dr. Susan A. Holechek for BIO 340 (2024) Name (Last, First): _______________________ Use the Chi-square stable in order to determine if the null hypothesis (H 0 ) is rejected or or not . 1. P value = 2. Sodium benzoate (S) H 0 = 3. How do the BIO 340 results compare to those of previously published data from the USA population? Circle the correct answer: a) The frequency of the dominant allele in BIO 340 is similar to the one from the USA data. b) The frequency of the recessive allele in BIO 340 is similar to the one from the USA data. c) The frequencies of the dominant and recessive alleles are different from the USA data. 4. If these results could be explained by individuals moving in and out of the population, which evolutionary force is this referring to? ___________________________________________ 5. Mention 3 reasons why most populations are NOT in Hardy-Weinberg equilibrium: 1) _______________________ 2) _______________________ 3) _______________________ Hint: Find q first The following data was obtained from a previous BIO 340 class. Data obtained from reference articles regarding the USA population are also provided and will be used to determine the “Expected” frequency and counts. You will have to analyze the data and provide phenotype, genotype and allele frequencies as well as perform a chi-square analysis. Complete every single empty square. For frequencies, (O-E) 2 /E and X 2 round to two decimal places. For counts use whole numbers. TASTERS (p 2 + 2pq) NON-TASTERS (q 2 ) Allele frequency # Frequency # Frequency p q BIO 340 140 60 USA N.A. 0.25 N.A. 0.75 SS (p 2 ) Ss (2pq) ss (q 2 ) Total Observed BIO 340 Counts Observed BIO 340 Frequency 1 Expected Frequency 0.75 1 Expected Counts (O-E) 2 /E X 2 = Test paper S = Sodium benzoate

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