One of the great discoveries of biology is that organisms have a class of genes called “regulatory genes,” whose only job is to regulate the activity of other genes. How many genes does the typical regulatory gene regulate? A study of interaction networks in yeast (S. cerevesiae) came up with the following data for 109 regulatory genes (Guelzim et al. 2002).

a. What type of graph should be used to display these data?

b. What is the estimated mean number of genes regulated by a regulatory gene in the yeast genome?

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)?

Transcribed Image Text:

Number of genes regulated 11 22 33 44 55 66 77 88 99 1010 1111 1212 Frequency 2020 1010 77 77 88 88 55 22 44 44 33 44