Abstract
Acid phosphomonoesterases of the house fly have been separated by the thin-layer electrophoretic technique of Ogita. A study of migratory behavior in the various stages of the life cycle showed that a positively migrating faster band is characteristic of larvae, while two different electrophoretic band groups were observed in adults, one a fast-moving band group (F) which migrated toward the anodal side, and the other a slow-moving group (S) which migrated toward the cathodal side each consisting of five electrophoretically different molecular species. The tissue specificity or the zymogram patterns of various stages in pupae and adults showed that these five molecular species revealed or eliminated simultaneously, and neither singly nor in any combinations. The inheritance of these electrophoretic variants is controlled by a pair of codominant alleles of Phos-locus which is 26.1± map units apart from car-locus of the 5th chromosome on which the genes responsible for esterases and diazinon resistance gene are located. The electrophoretic variants of acid phosphomonoesterase have been found to show no relation to insecticide-resistance.
