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Bristle patterns and clones along a compartment border in the anterior wing margin of Drosophila hydei

Wilhelm Roux's Archives of Developmental Biology, ISSN: 0340-0794, Vol: 188, Issue: 3, Page: 195-200
1980
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The bristle pattern along the first longitudinal vein of the wing of D. hydei differs from that of D. melanogaster. Instead of a triple row, D. hydei and some allied species show a pattern of five parallel bristle rows of which the medial row (MR) is comparable to the medial triple row (MTR) of D. melanogaster. Cells of the MR can be made homozygous yellow (y) by induction of mitotic recombination in heterozygous y/y females. Until 70 h after egg laying (AEL), the MR clones in D. hydei overlap with one or more of the accompanying dorsal and ventral bristle rows. Between 70 and 120 h AEL the MR clones only overlap with dorsal bristle rows. Some time later they also become separated from both dorsal rows. The resulting MR clone pattern fits with the overall longitudinal clone pattern in the wing blade of D. melanogaster described by Bryant (1970) and others. The MR clones in D. hydei, however, often show a fragmented appearance with many indentations of the surrounding y tissue even when induced after fixation of the DV compartment boundary. This result contrasts with the commonly held notion, derived from work with D. melanogaster, that compartment boundaries are smooth lines. © 1980 Springer-Verlag.

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