Fig. 5. Variation in toxicant responses is heritable among genetically diverse C. elegans strains.

The broad-sense (x-axis) and narrow-sense heritability (y-axis) of normalized animal length measurements was calculated for each concentration of each toxicant (Methods; Broad-sense and narrow-sense hentability calculations). The color of each cross corresponds to the log-transformed exposure for which those calculations were performed. The horizontal line of the cross corresponds to the confidence interval of the broad-sense heritability estimate obtained by bootstrapping, and the vertical line of the cross corresponds to the standard error of the narrow-sense heritability estimate.