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9. One of the great discoveries of biology is that organisms have a class of genes called regulatory genes, whose only job is to regu. late the activity of other genes. How many genes does the typical regulatory gene regu- late? A study of interaction networks in yeast (S. cerevesiae) came up with the following data for 109 regulatory genes (Guelzim et al. 2002).
Number of genes regulated Frequency 20 10 8 10 12 13 14 15 16 17 18 19 20 2 2 25 26 28 29 37 Total 109 What type of graph should be used to display these data? What is the estimated mean number of genes regulated by a regulatory gene in the yeast genome? a. b. c. What is the standard error of the mean? d. Explain what this standard error measures. e. What assumption are you making in part (c)?
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