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. Author manuscript; available in PMC: 2017 Feb 23.
Published in final edited form as: Wiley Interdiscip Rev Dev Biol. 2011 Nov 17;1(1):16–39. doi: 10.1002/wdev.3

Figure 9. Regulatory relationships between major components in DV axis patterning.

Figure 9

Left panel (Drosophila): the DV axis patterning network in Drosophila is mostly a linear cascade with the exception of multiple positive and negative feedback loops within the protease cascade components. Right panel (Tribolium): nothing is known about the involvement of a protease cascade in Tribolium similar to that involved in Drosophila. However, Tribolium posses multiple feedback loops at levels more downstream.