Figure 1: Food hardness preference.
From: Mechanosensory neurons control sweet sensing in Drosophila

(a,b) Effect of food hardness on food preference. Flies were given a choice between (a) 0.5 mM sucrose in 0.2% agarose and 1 mM sucrose in varying concentrations of agarose (0.2–2%) or (b) 0.5 mM sucrose in varying concentrations of agarose (2–0.2%) and 1 mM sucrose in 2% agarose. The red dashed line indicates no preference. n=4. (c) Effect of sweetness on food hardness-based preference. Flies were given a choice between 0.5 mM sucrose in 0.2% agarose and varying concentrations of sucrose (0.5–5 mM) in 2% agarose. n=4. All data are presented as means±s.e.m.