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. Author manuscript; available in PMC: 2018 Dec 1.
Published in final edited form as: Curr Opin Genet Dev. 2017 Sep 4;47:33–40. doi: 10.1016/j.gde.2017.08.003

Figure 3. Heterochrony in AC invasion timing observed in rhabditid nematodes.

Figure 3

Changes in the timing of nematode AC invasion in relation to vulval precursor cell division. A) Simplified rhabditid nematode phylogeny (left) depicts timing when AC invasion is complete based on DIC imaging [34]. B) Changes in timing of AC invasion have occurred in the evolution of the Oscheius genus (yellow). Red bar denotes invasion at the P6.p 1-cell stage, orange at the 2-cell stage, and blue at the 4-cell stage, summarized in the schematic (right). Micrographs modified from [34].