A species-specific nuclear receptor was integrated into a developmental polyphenism pathway.

Abstract excerpt

Polyphenism, the ability of an organism to develop discrete, alternative forms of a trait in response to environmental signals, relies on molecular switches to guide developmental trajectories. In the nematode Pristionchus pacificus, such a switch produces a dimorphism in its adult feeding structures, enabling individuals to develop as either microbivores or predators based on the environments they experience...

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