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Nature Genetics 40, 13 (1 January 2008) | doi:10.1038/ng0108-13

Touching base

This month we are highlighting medaka b mutants, which have reduced melanin formation as seen in the bottom two animals in the photo. Identification of mutations in the AIM1 gene at the B locus by Shoji Fukamachi and colleagues was the first successful positional cloning of a gene in this organism (Nat.