Abstract
Three heritable patterns, F, S and FS, of blood albumin in silkworm larvae were demonstrated by means of polyacrylamide gel electrophoresis. F type larvae were characterized by a single band which migrated more rapidly to the anode than that of the S type larvae. F1 hybrid between F and S strains showed an FS type characterized by having both zones, F and S. As a result of the mating experiments involving these phenotypes, it was found that these characters were controlled by a pair of codominant autosomal alleles, designated as AlbF and AlbS. It was clarified from linkage analysis that the allele was linked with narrow breast (nb) gene on the 20th chromosome with the crossover value of 6.2±1.02%.
