Soybeans have three cultivar-specific electrophoretic fonns of a seed acid phosphatase (Gorman and Kiang, 1977). Hildebrand et al. (1980) reported that the three acid phosphata se fonns are inherited as codominant alleles at a single locus. The symbol Ap^a was assigned to the slow form, Ap^b to the intermediate and Ap^c to the fast form.
Hildebrand, D. F. and Hymowitz, T.
"Research Notes : Seed acid phosphatase genotypes of cultivars in the USDA
Soybean Genetics Newsletter: Vol. 7
, Article 16.
Available at: http://lib.dr.iastate.edu/soybeangenetics/vol7/iss1/16