Figure 1.

Minos-derived vectors. Minos inverted terminal repeats are shown as thick, solid arrows. Open blocks outside these arrows indicate the sequences flanking the original Minos element in the D. hydei genome. Arrowheads indicate the positions of primers used to detect Minos excisions. Small arrows indicate the direction of transcription of the GFP and transposase genes. Solid bars represent fragments used as probes. All other features are described in Materials and Methods.