Figure 2

The squared coefficient of variation (CV2) in per-gene expression for foragers and nurses.
The x-axis is the log10 normalized per-gene expression level and the y-axis is the squared coefficient of variance (CV2). It is apparent that variability in gene expression within foragers is higher than nurses for most genes, yet not for genes with a low level of expression (which should be the most prone to variation arising from technical artifacts).