[3C1--3C2];[20F]
Left (3C1-2) breakpoint is at -21 kb in the restriction map of the w locus (0 point at site of the copia insertion in wa); right (20F) breakpoint near the 3' end of a Type I mobile element that is inserted in a ribosomal RNA gene (Tartof et al., 1984).
In(1)wmMc/0 males show a marked reduction in viability.
viable, fertile and bb+. Left breakpoints therefore eye color light mottled
McLean.
Complementary single recombinants between In(1)wm4 = In(1)3C1-2;20F and In(1)wmMc are identical and right breakpoints on the same side of bb.