Juvenile hormone (JH) metabolism in two lines of Drosophila melanogast
er adults was studied under normal conditions and after short-time hea
t stress. Females of the line Cy/L; D/Sb were shown to have high JH hy
drolysis levels which to decreased when they experienced heat stress b
y decreasing its level. Genetic analysis of differences in the level o
f JH metabolism in fines 921283 and Cy/L; D/Sb of D. melanogaster unde
r normal conditions was performed. It was established that the trait s
tudied was inherited according to the incomplete dominance type. It wa
s shown that these differences were controlled by the gene (genes) loc
alized in chromosome 2.