Dt. Kuhn et al., Pair-rule genes cooperate to activate en stripe 15 and refine its margins during germ band elongation in the D-melanogaster embryo, MECH DEVEL, 95(1-2), 2000, pp. 297-300
Patterns of gene expression have been well documented during embryogenesis
for the Drosophila melanogaster trunk segments. The same is not the case fo
r the terminal segments. Here, gene expression patterns are followed during
embryogenesis in the caudal segments (A8-A10 and the anal plate), with spe
cial attention paid to the novel regulation of engrailed (en). Chosen for t
his study are the pair-rule genes even-skipped (eve), Sushi tarazu (ftz), r
unt (run), hairy (h), paired (prd) and odd-skipped (odd), and the segment p
olarity gene (en). The results demonstrate a progressive and coupled transl
ocation of gene expression distally for all genes studied, suggesting that
the most posterior segments are determined later than trunk segments. (C) 2
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