Fitness of yeast strains upon deletion of inessential genes present in multiple complexes. Box-and-whisker plots of strain fitness upon deletion of inessential genes which are part of multiple complexes, measured in YPD medium. Start and end of the boxes indicate the first and third quartile of the fitness distribution of inessential genes present in a given number of complexes, and whiskers denote the respective minimum and maximum fitness values. The medians of the respective distributions are shown as black bars. As only 21 inessential genes are present in more than 16 complexes, we grouped them together.