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Survival of H. armigera larvae exposed to a diagnostic concentration of Cry1Ac (1 μg toxin/cm2 diet). (A) Susceptible strain (SCD) and resistant strains (AY2, QX7, and SCD-r1). The asterisk indicates 0% survival for SCD. (B) Single-pair F1 families from AY2 × SCD. (C) Single-pair F1 families from QX7 × SCD. Gray bars indicate resistant male × susceptible female. Striped bars indicate resistant female × susceptible male. Sample size for each strain or single-pair family = 48.
