Research Diagrams (feel free to use with due credit)
Evolutionary Physiology -- unique "emergent" questions
Phenotypic Hierarchy -- expansion of S. J. Arnold's (1983) morphology, performance, fitness paradigm
Star_Phylogeny_vs_Hierarchical_Tree -- phylogenetic comparative methods
Phylogenetic Pseudoreplication -- phylogenetic comparative methods
Phylogenetically_Independent_Contrasts_1.jpg -- phylogenetic comparative methods (how to compute Felsenstein's [1985] phylogenetically independent contrasts
Phenotypic_Plasticity_Genotypes_to_Phenotypes.jpg -- phenotypic plasticity, illustrating reaction norms and genotype-environment interaction
Above Fig. 1 is from: Orr, T. J., and T. Garland, Jr. 2017. Complex reproductive traits and whole-organism performance. Integrative and Comparative Biology 57:407–422.
Sometime in the 1990s, I found this image in an old evolution textbook, then had it edited a bit by our illustrator in Wisconsin, Bill Feeny. Now, I cannot find the source of the original!