Divergence at the IRX gene cluster underlies extreme trophic polymorphism in a cichlid fish (Herichthys minckleyi).

Abstract excerpt

The origin of the extensive phenotypic divergence characterizing adaptive radiation could often be geographically localized and genetically simple. In a classic case of a trophically polymorphic cichlid fish (Herichthys minckleyi), we investigated alternative genomic processes that could have produced its extreme within-population variation in pharyngeal jaw tooth size. First, we generated a high-quality...

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