The Structure of Evolutionary Theory

Seeds of Hierarchy 205 organismal selection for such late stages in the reduction of degenerate organs. "To use Herbert Spencer' ...

206 THE STRUCTURE OF EVOLUTIONARY THEORY for Allmacht, and against Lamarckian inheritance, rested upon a logical structure of in ...

Seeds of Hierarchy 207 explanation of degeneration. Panmixia is a genuine, but weak, force; it can reduce the average value of a ...

208 THE STRUCTURE OF EVOLUTIONARY THEORY by J. Arthur and Margaret R. Thomson as The Evolution Theory in 1903. A comparison of t ...

Seeds of Hierarchy 209 the courting of fame). The vast majority quickly succumbed to the negative selection of incomprehensibili ...

210 THE STRUCTURE OF EVOLUTIONARY THEORY An unbiassed and more deeply probing conception of organic individuality shows that the ...

Seeds of Hierarchy 211 Obviously, Roux had adopted Darwinian language for his title. Just as obviously, he hoped to apply the Da ...

212 THE STRUCTURE OF EVOLUTIONARY THEORY about inheritance. No matter how exquisite or optimal the outcome for any one organism, ...

Seeds of Hierarchy 213 tissues in an organism, and different species of birds in a broad geographical region: The case may be co ...

214 THE STRUCTURE OF EVOLUTIONARY THEORY but such a process does produce internal order within a body by struggle— just as natur ...

Seeds of Hierarchy 215 different definition). Each id contains a determinant for every trait, and can therefore build a body. We ...

216 THE STRUCTURE OF EVOLUTIONARY THEORY Weismann offered the same pugnacious defense for germinal selection that he had long ch ...

Seeds of Hierarchy 217 at the same time, hierarchical selection does not merely extend Darwin's exclusively organismal version i ...

218 THE STRUCTURE OF EVOLUTIONARY THEORY highway for new variation, and any positive natural selection can automatically engende ...

Seeds of Hierarchy 219 fishes that have migrated into dark caves, organismal selection against eyes must lead to differential su ...

220 THE STRUCTURE OF EVOLUTIONARY THEORY change or extension, radically altered his conception into a full selectionist theory o ...

Seeds of Hierarchy 221 Following the early 20th century vogue for eugenics, Weismann used this argument to promote a positive pr ...

2 22 THE STRUCTURE OF EVOLUTIONARY THEORY "In one direction variation can be proved to go on without limit, and that is downward ...

Seeds of Hierarchy 223 EXPANSION OF THE HIERARCHY BOTH UP AND DOWN FROM A DARWINIAN FOCUS ON ORGANISMS. Weismann devised germina ...

224 THE STRUCTURE OF EVOLUTIONARY THEORY eventual judgment about merit and utility. Weismann, by far the most thoughtful of Darw ...