Diagram integrating Ace-1 into a physical map of the codling moth Z chromosome. The gene-based physical map was adopted from Nguyen et al. . The mean relative position of Ace-1 was calculated from physical distances between Ace-1 and RpP0 hybridization signals related to physical distances between RpP0 and Nan in 10 ZZ bivalents. Major genes conferring insecticide resistance are underlined, Ace-1 is in red.