Figure 4
From: Genetic variation in the pleiotropic association between physical activity and body weight in mice
Two examples of epistatic effects on the association between physical activity and body weight. Each example includes a bar diagram that shows the epistatic effects of two QTLs on the physical activity trait significantly affected, and two additional line plots that illustrate the effect on the variance (arrows) of both the affected physical activity trait and on body weight from the perspective of the rel QTL; note that the physical activity trait is more affected than weight, illustrating differential epistasis.