Figure 6From: Fitness variation in response to artificial selection for reduced cell area, cell number and wing area in natural populations of Drosophila melanogasterDrosophila melanogaster wing. The black outline superimposed on the wing joins the six points (1–6) used to determine wing area. The box (A) indicates the standard region used for trichome counting to estimate average cell area. On wings of different size, the region was chosen corresponding to the equivalent location with respect to veins and wing margin.Back to article page