Fig. 3.

Boxplots of mutation rate ratios ($\mu$_m/$\mu$_n) of datasets that include different levels of taxonomic breadth (i.e., genera, families, superfamilies, and high taxonomic ranks). Median values (wide horizontal line in box), interquartile ranges (boxes), minimum and maximum range (ends of whiskers that extend 1.5 times the interquartile range), means (solid square symbols), and outlier values (open circle symbols) are indicated