Figure 6. Female landmarks and vector difference to male landmarks for 13 wingvein landmarks in three Wild Type strains of Drosophila melanogaster. Inset ellipses are approximate 95% confidence intervals for the raw aligned landmarks. The female averages (hollow square, circle and diamond) and male averages (solid square, plus and cross) are averages of landmarks, aligned using the least square algorithm of Siegel (1983). (view the image alone for 2X resolution.)