Figure 8D. Principle Warps of  thin plate spline comparison of male and female average wing landmarks of three wild type Drosophila melanogaster strains.  The combined three top principle components for each strain result in parallel differences for sex in all three strains.  The remaining two principle components exhibited reversed polarities among the strains but contributed only 2% of the variability.  A kinemage file of the 300 wings is available via HTML download.