The Structure of Evolutionary Theory

in complexification)." Darwin developed the first testable and operational theory of evolution by locating all causality in the ...

Hierarchical models of evolutionary processes (at least descriptively so, but causally as well) have been featured and defended ...

tives—for the diversity of organs growing off the stems and roots of plants. He viewed cotyledons, and all the standard parts of ...

adaptationist optimality for individualized features of anatomy—a theme that he epitomized as "correlations of growth." But he d ...

different segments of a common pathway, but all supposedly living in an identical environment—where others had reconstructed typ ...

their one personal meeting early in de Vries's career. But de Vries, who developed the theory of intracellular pangenesis (the u ...

had explicitly denied such an outcome as the most radical implication of his theory), but on subsidiary ecological claims for th ...

of phyletic change, implied by Kelvin's dates, were entirely acceptable under their reading of evolution. Chapter 7: The modern ...

ance altered from initial stress upon stochastic alternatives to selection to an auxiliary role for drift (as an impetus for the ...

particular, and by these criteria, species must be construed not only as classes (as traditionally conceived), but also as disti ...

weaknesses and problems, interdemic selection has now been empirically validated as an important force in evolution—thus strengt ...

of its own integrity; failure of this suppression leads to the pyrrhic victory of cell- lineages that we call cancer. Interdemic ...

portance of drift (both species drift and founder drift) vs. selection as a mechanism of sorting at the species level, but not a ...

tion at a higher faunal level. Punctuation must be scaled relative to the later duration of species in stasis, and we suggest 1- ...

concentrated at events of speciation themselves. Subsequent work in evolutionary biology has not confirmed any a priori preferen ...

sis on Vrba's antelopes and, especially, Cheetham's rigorously quantitative and multivariate data of evolution in the bryozoan g ...

ripheral superiorities. Hominid evolution must also be rethought as reduction of diversity to a single species of admittedly spe ...

erectus toolkit), and nontrending, despite classical (and false) claims to the contrary by both experts, the Abbe Breuil and And ...

portant adaptations by means of one heterochronic alteration, as neoteny in descendant Gryphaea species of the English Jurassic ...

82 THE STRUCTURE OF EVOLUTIONARY THEORY site sign of domination for external natural selection upon a yielding internal substrat ...