amorphic allele - genetic evidence
Frameshift mutation.
lethal - all die before end of second instar larval stage
lethal - all die before end of second instar larval stage (with Df(3L)BSC380)
lethal - all die before end of second instar larval stage (with Pmm2FS2)
Pmm2FS1/Pmm2FS1, Pmm2FS1/Df(3L)BSC380 and Pmm2FS1/Pmm2FS2 mutants all show early larval lethality during the late first to early second instar transition.