Red cell esterase-D polymorphism in the population of Tuscany

Abstract
Esterase-D phenotypes were determined in a population sample of Tuscany, Italy. The observed frequencies of the three alleles are: EsD1=0.856, EsD2=0.143 and EsD3=0.001. Studies of the pedigree of the propositus's EsD 3-1 family and mother-child combinations confirm an autosomal co-dominant inheritance.