lethal | recessive
lethal - all die before end of P-stage (with Df(3L)1-16)
paralytic | heat sensitive (with Snap25ts)
some die during pharate adult stage (with Df(3L)1-16)
Homozygotes die before the third larval instar.
Snap25ts
Snap2542/Df(3L)1-16 is rescued by Snap25nSyb.PR