It's looks to be at the last instar before adult.Poor little roach! What stage is it (how long has it been living like that)? I don't have a clue how it happened, maybe damage in the egg causes it. :huh:
That deformity is also found in millipedes, pseudoscorpions and possibly every segmented invertebrate. It may not be genetic, however, arthropods that reproduce through parthenogenesis aren't perfect genetic replicas.
Likely she will produce normal young as the defect would be unlikely to be genetic in origin.Keep us updated I'm excited!!!