Figure 2
From: Genome-wide association study of sleep in Drosophila melanogaster
Histograms of mean and the coefficient of environmental variation ( CV E ) for sleep duration. Blue bars denote male line means, pink bars denote female line means, and the difference in line means between males and females (male – female) is shown by purple bars. (a) Night sleep. (b) Male - female night sleep. (c) Day sleep. (d) Male – female day sleep. (e) Night sleep CV E . (f) Male – female night sleep CV E . (g) Day sleep CV E . (h) Male – female day sleep CV E .