GENETIC-ANALYSIS OF CHANGES IN ALKALINE-P HOSPHATASE ACTIVITY IN 2 STRAINS OF DROSOPHILA-VIRILIS DIFFERING IN HEAT-SHOCK RESPONSE

Genetic control of changes in alkaline phosphatase activity was studie d in adult individuals from two strains of Drosophila virilis under no rmal conditions and at a high temperature (38 degrees C). Flies from s train 101 responded to the heat shock with a reduction in enzyme activ ity, whereas flies from strain 147 lacked this response. Strains 101 a nd 147 were shown to differ in alkaline phosphatase activity at a norm al temperature. Genetic analysis of these differences was performed. T hey were shown to be controlled monogenically (or by a battery of tigh tly linked genes). The gene determining alkaline phosphatase activity was localized on an autosome.