Question

Chapter 7, Section 2, Exercise 054 GENETICS AND FAST-TWITCH MUSCLES The gene ACTM3 encodes a protein that functions in fast-twitch muscles. People can be classified according to which genotype of this gene they have, RR, RX, or XX, and also according to which genetic allele they have, R or X. The study described here, examines the association between this gene and different subgroups of the population. All participants in the study live in Australia. The earlier exercises only included the control group. Gender and ACTN3 Genotype We know that sprinters are more likely to have allele R and genotype RR versions of the ACTN3 gene, which makes these versions associated with fast-twitch muscles. Is there an association between genotype and gender? Computer output is shown for this chi-square test, using the control group in the study, In each cell, the top number is the observed count, the middle number is the expected count, and the bottom number is the contribution to the chi-square statistic. RX 73 XX Total 134 Male 40 40.26 0.002 21 69.20 24.54 0.208 0.509 Female 57 87.74 150.80 53.46 0.096 0.234 147 292 0.001 Total 128 220 78 426 Chi-Sq 1.050, DF 2, P-Value 0.592 What is the p-value? What is the conclusion of the test?

Answer 1

P-value = 0.592

P-value > 0.05 so we do not reject the null hypothesis. No Gender is not associated with likelihood of having a '' spriniting geme.

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