lethal - all die before end of pupal stage (with scra4)
some die during pupal stage (with scra4)
imaginal disc | third instar larval stage (with scra4)
Embryos of the genotype scra7/scra4 survive to pupation but die before eclosion. Imaginal discs in scra7/scra4 3rd instar larvae are much smaller than in wild-type and are hard to identify. The rudimentary discs contain many large bi-nucleate cells.