Mouse alpha-dystrobrevin genes are significantly different from human genes in their syntrophin binding sites and brain-specific isoforms, which questions the use of mouse models to study Duchenne muscular dystrophy and related neuromuscular diseases.

A somatolactin mutation in medaka fish that reduces orange pigmentation makes them unattractive to all medaka but those carrying the mutation, suggesting that a single mutation can trigger assortative mating leading to speciation.