Figure 1.

Regions of interest (regions A–D) and gaps (gap 1–5) not covered in Dp(1;Y) screen were examined using smaller X duplications, Dp(1;3), translocated to the third chromosome. (A) Males with X duplications that span regions A–D were crossed with w females (allele w¹¹¹⁸), sons with the duplication were again crossed with w females and F₂ sibling males were analyzed. Bars represent weight ratios of third instar wandering w males with a duplication to w males with no duplication. Control lacZ transgene-expressing lines were examined in the same manner. (B) Males with X duplications spanning gaps 1–5 were examined as described for regions A–D above. The absence of bars for duplication lines Dp(1;3)DC068 and Dp(1;3)DC232 reflect persistent gaps in coverage, resulting from reduced viability and fertility in males with these duplications. Error bars indicate where experiments were repeated.