ANALYSIS OF SOME TEMPERATURE EFFECTS ON DROSOPHILA PUPAE

Abstract

A previously presented scheme unifying a variety of high temperature effects on day-old Drosophila melanogaster pupae has been confirmed substantially by a large body of new data. Several minor modifications have been male. A double temperature dependence is demonstrated in which both the amount of a precursor and the rate of its conversion vary with temperature in a particular range. In this range, the temperature coefficient of crossvein defect induction is the product of two components. This property inheres in branched pathways. Rate constants and temperature coefficients have been calculated for the individual steps of the scheme, on the basis of the data from specific experiments. The scheme is capable of generalization over a broad temper?ture range.