Albumin polymorphism in the feral donkey of Death Valley National Monument, California

Evidence is presented for the occurrence of a second allele in the albumin system of the donkey (Equus asinus). Samples were collected from 127 feral donkeys in four locations within the Panamint Mountains of Death Valley National Monument, California. A common phenotype, electrophoretically characterized by a single band, was recorded from all four locations. A rare, double-band phenotype was recorded from two locations.