92.1% of eggs derived from a cross of wild-type females to bin3KG00599/Df(2R)Drlrv25 males initiate development. Only 41.1% of eggs derived from a cross of bin3KG00599/Df(2R)Drlrv25 females to wild-type males initiate development, and 22.7% of the embryos that initiate development show embryonic lethality.
The progeny of bin34-7/bin32-7 females mated to bin3KG00599/Df(2R)Drlrv25 males show defects in egg development (only 50% of the eggs derived from the cross initiate development) and in embryogenesis (18.7% of the embryos that initiate development show embryonic lethality). The progeny of the reciprocal cross also show similar defects (65% of the eggs initiate development and 32% of the embryos that initiate development show embryonic lethality).
Most unhatched larvae from a cross of bin32-7/bin34-7 females mated to wild-type males or from bin34-7/bin32-7 females mated to bin3KG00599/Df(2R)Drlrv25 males have defects in the formation and/or organisation of the head skeleton.
Df(2R)Drlrv25/bin3KG00599 has lethal | embryonic stage | maternal effect phenotype, enhanceable by bcd6/bcd[+]
The defects seen in the progeny of bin34-7/bin32-7 females mated to bin3KG00599/Df(2R)Drlrv25 males and in the reciprocal cross are enhanced by a maternal copy of bcd6/+.
One maternal copy of bin3Hsp83.PS significantly rescues the defects seen in the progeny of bin34-7/bin32-7 females mated to bin3KG00599/Df(2R)Drlrv25 males (both the defects in egg development and in embryogenesis are significantly rescued).
The head skeleton defects of unhatched larvae from a cross of bin34-7/bin32-7 females mated to bin3KG00599/Df(2R)Drlrv25 are completely rescued in approximately 50% of cases by bin3Hsp83.PS.