ADAPTIVE SIGNIFICANCE OF AMYLASE POLYLMORPHISM IN DROSOPHILA .10. ANALYSIS OF ALPHA-AMYLASE ACTIVITY OF 2 AMYLASE VARIANTS IN INDIVIDUAL DROSOPHILA-SUBOBSCURA FLIES

Experiments were designed to estimate the variation of alpha-amylase a ctivity in Drosophila subobscura individuals homozygous for AmyS and A myF alleles at the Amy locus. The measurements of enzyme activities hi six groups of male progenies determined in each individual have shown that degree of variation differs between S and F strains. Variability of amylase activity among male progenies of S strain was substantiall y greater, which also had significantly higher specific amylase activi ty than in F strain. The analysis of amylase activity variance showed that this variance among the males is 40 times, and among the females 2.7 times smaller in F than in S strain.