Power comparisons when data are simulated assuming a log normal distribution for the allelic expression ratios.

<p>For all simulations: . Panel A: Effect of sample size assuming transcribed and <i>cis</i> acting polymorphism are in linkage equilibrium (Simulation parameters: and ). Panel B: The influence of the extent of disequilibrium (Simulation parameters: ); Panels C and D: The influence of effect size (Panel C for and panel D for other simulation parameters ). Panels E and F: The influence of allele frequency for the transcribed polymorphism (Panel E for and panel F for , othersimulation parameters: ). Panels G and H: The influence of allele frequency for the <i>cis</i> acting variant (Panel G for and Panel H for ,other parameters: ).