Figure 1.—

Activity of piggyBac elements in different lines. The mean proportion (±SD; n = 3) of flies that are heterozygous for a piggyBac element and a piggyBac transposase gene with mosaic eye color (element activity) is shown for each of the lines used in this study. A one-way analysis of variance (ANOVA) was performed to compare the effect of element location on element activity. There was a significant effect of element location on element activity: F_[18,38]=149.66, P < 0.0001. Post-hoc comparisons of all pairs of means using Tukey's HSD test indicated which elements had significantly different activities (P < 0.05). Elements with significantly different means are indicated with different lower case letters.