1B-1C;39E-39F;80A-80B;98F;[1B-1C];[39E-39F];[80A-80B];[98F-98F];
y is placed in the vicinity of the centric heterochromatin in this rearrangement, so that the reduced complementation of y1#8 by T(1;2;3)YTD5 (compared to the complementation of y1#8 seen with the progenitor y2 chromosome) may be due at least in part to position effect variegation. Consistent with this interpretation, y1#8/T(1;2;3)YTD5 females have a variegated pattern of bristle pigmentation.
The tentative new order for T(1;2;3)YTD5 is: 1A-1B | 80B-98F | 80A-61 ; 21-39E | 1C-20 ; 60-39F | 98F-100