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Fig. 2. rig mutant larvae have defective mouthhooks. (A) The mouthhooks of
control (+/Df(2R)exu1) second instar larvae have three to
four large teeth, while control third instar larvae (B) have larger mouthhooks
with numerous smaller teeth. (C) rig mutants
(l(2)k07839/Df(2R)exu1) that die as prolonged
second instar larvae have normal second instar mouthhooks. (D) The mouthhooks
of rig mutant that die as third instar larvae are severely malformed.
(E) rig mutants that die while trying to molt have two sets of
mouthhooks, a normal second instar set (red arrows) and a malformed third
instar set (black arrows).
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