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Fig. 1. Homozygous l(4)8 flies show a headless phenotype. Scanning electron micrographs of the anterior portion of homozygous l(4)8 pharate (A-D) or rare viable (E) adults and of a wild-type fly (F) are shown. The strongest phenotypes (A,B) are headless and lack all structures derived from the eye-antennal discs. Typical weaker phenotypes include half-heads (C) and cleft-heads (D). (A,E,F) Lateral, (B-D) dorsal views, anterior is to the left.
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