 The consensus among scientists is that all behaviors are phenotypes—complex interactions of both biology and environment—and thus nature vs. nurture is a misleading categorization.The term "sex differences" is typically applied to sexually dimorphic traits that are hypothesized to be evolved consequences of sexual selection.For example, the human "sex difference" in height is a consequence of sexual selection, while the "gender difference" typically seen in head hair length (women with longer hair) is not.