FIGURES 8A, B and C
Figure 8. Similar sexual dimorphism measureable in three wild type
Drosophila melanogaster strains using thin plate spline methodology.
Combined Relative Warp analysis of the 6 average wings (male and female
of each of the three wild-type strains) allows separation of three principle
components of Relative Warp (containing 98% of the total variability of
the five available principle components) which have similar (parallel)
sex dimorphism components:
The six average wing shapes were submitted to a factorial design regression
analysis which separated sexual from strain effects. The Thin
Plate Spline Regression of wing-shape on Sex demonstrates again a dilation
of the distal wing blade in the male as the major difference between the
sexes among the three wild type strains. Including the individual
wings in an analysis of variance regression analysis provides the degrees
of freedom to test for the interaction between sex and strain, Table
IV.
