Comparison between clonal and F₁ hybrid fish allelic expression pattern differences. Genes showing consistently biased allelic expression patterns within the clonal fish cohort, but inconsistent allelic expression patterns within the F₁ hybrid fish cohort, or the reverse case, were used to calculate the maximum allelic expression pattern difference [(Log P. latipinna/P. mexicana)_max − (Log P. latipinna/P. mexicana)_min] for both clonal and F₁ hybrid fish in all three organs. Density curves of allelic expression pattern differences were plotted to represent distribution of these values in both fish cohorts.