Categories: Pigmentation phene

Mendelian trait/disorder: yes

Disease-related: no

Key variant known: no

Year key variant first reported: 2017

Species-specific description: Kimura et al. (2017): "The medaka has four pigment cell types: black melanophores, yellow xanthophores, white leucophores, and silvery iridophores. The causal genes of melanophore, xanthophore, and leucophore mutants have been elucidated, but the causal gene for the iridophore mutant remains unknown. Here, we describe the iridophore mutant, guanineless (gu), which exhibits a strong reduction in visible iridophores throughout its larval to adult stages."

Molecular basis: Kimura et al. (2017): "exons 4–7 of pnp4a were deleted in the gu mutant"

Associated gene: