Fig. 1.

Experimental design. Eggs developed from larvae to adults under three diets, 0.25SY, 1SY and 2.5SY, that differed only in their concentrations of sugar and yeast. Emerging adults were immediately divided across these same three diets resulting in a total of nine different treatment groups. Gene expression was measured on virgin flies sampled when 10% (middle age) and 90% (old age) of the treatment cohort had died