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Shapiro, Michael D. | Limb diversity and digit reduction in reptilian evolution | The study of morphological rules, or trends, offered classical biologists the opportunity to address the mechanisms underlying the evolution of anatomical designs. Regularities in evolution suggested that common functional or developmental rules governed the transformation of structures. Parallelism... | Digit loss; Morphology; Adaptation | 2006 |
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Ehleringer, James R. | Population- and family-level variation of brittlebush (Encelia farinosa, Asteraceae) pubescence: its relation to drought and implications for selection in variable environments | Because leaf pubescence of the desert shrub Encelia farinosa increases in response to drought and influences photosynthesis and transpiration, we hypothesized that differences in water availability across the range of this species may result in genetic differentiation for pubescence and associated p... | Encelia farinose; Absorptance; Adaptation; Asteraceae; Desert; Drought acclimation; Leaf pubescence; maternal family variance; spatiotemporal heterogeneity | 2003 |