lethal - all die before end of larval stage
lethal - all die before end of larval stage | recessive
some die during larval stage
some die during larval stage | recessive
Mutant larvae fail to pupariate and persist as larvae for many days. Their medial and lateral imaginal discs are much reduced and larvae develop melanotic tumours as they age.
Lethal phase is during the third larval instar stage.