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Analysis Of The Genes Involved In Organizing The Tail Segments Of The Drosophila Melanogaster Embryo
Authors
D. T. Kuhn
J. A. Mack
G. Turenchalk
Publication date
1 January 1995
Publisher
'Information Bulletin on Variable Stars (IBVS)'
Abstract
The metameric organization of the Drosophila melanogaster tail is obscured by developmental events that partially suppress or fuse some of its regions. To better define the developmental origins and segmental identities in the tail of the Drosophila embryo, we documented expression patterns and mutant phenotypes of several genes that play important roles in its morphogenesis. We documented the domains of engrailed (en), Abdominal-B (Abd-B) and caudal (cad) expression in the tail region. The staining pattern of cut (ct) was used to correlate the embryonic sense organs with their respective positions on the larval cuticle. The en patterns in different Bithorax-Complex (BX-C) Abd-B morphogenetic (m) and regulatory (r) mutants demonstrated that Abd-B functions to, among other things, suppress embryonic ventral epidermal structures on the posterior side of A8 to A9. Ventral epidermal structures were not added back into the en pattern in r- or BX-C- mutants, indicating that although the BX-C functions extend through A10, other non-BX-C genes must be required for development of this segment. © 1995
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Last time updated on 19/07/2022