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Fig. 1. Comparison of mutant phenotypes and embryonic timing. (A) Comparison of
Nasonia zygotic headless (hl) and
Drosophila zygotic hunchback (hb) mutant
phenotypes. The black bars indicate regions with pattern deletions. (B)
Comparative timing of embryogenesis in Nasonia and
Drosophila. At 25°C, development from gastrulation to hatching is
completed in about 20 hours in both insects, but approximately threefold more
time is allocated to early development, prior to gastrulation, in
Nasonia.