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Bombyx wingless mutant, fl lacks four wings in the pupa and adult stages. (Top) The pupa (A and B) and adult (C and D) of wild type (A and C) and fl mutant (B and D). Bars, 5 mm. (Bottom) The vestigial wing of fl (E), flk (F), and fln (G). Bars, 0.5 mm.
