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natural selection造句
(31) Biologists disagree about whether natural selection makes increased complexity probable or improbable. (32) Darwin's vera causa argumentation shows that natural selection is not tautologous for one reason, ultimately. (33) In these terms, the original puzzle becomes that of why natural selection does not produce a population consisting entirely of hawks. (34) They could catch and eat more of their staple diet - worms and insects - surviving in accordance with the laws of natural selection. (35) This, too, is not unlike certain kinds of natural selection. (36) This principle of preservation I have called, for the sake of brevity, Natural Selection. (37) Our model, in other words, is strictly a model of artificial selection, not natural selection. (38) It is therefore possible to give an account of moral altruism by appeal simply to the principle of natural selection. (39) Any effect that a change in a gene has on its own replication probability is fair game for natural selection. (40) Natural selection is of traits favourable to the survival, not of individuals, but of successive generations. (41) Some interpretations, at least, of the hypothesis of natural selection do conflict with the theistic hypothesis on three main counts. (42) But we have now taught ourselves to see benefits to the organism as incidental, as far as natural selection is concerned. (43) There is an obvious analogy between operant conditioning and evolution by natural selection. (44) It was the great achievement of natural selection to explain the even greater variety of living species, including man. (45) Evolution by natural selection is' the direct negation of organic growth. (46) If so, much of life is neutral ground upon which natural selection enacts its rare battles. (47) But as Medawar first pointed out, the natural selection that maintains survival and fertility becomes weaker through the life history. (48) Unless such points are maintained, the analogy becomes so strained that little that is distinctive about natural selection remains. (49) All over the world, natural selection had responded to the new challenge. (50) They provide most impressive demonstrations of the power of natural selection to put together good designs. (51) The analogy between scientific progress and genetic evolution by natural selection has been illuminated especially by Sir Karl Popper. (52) Spontaneous natural selection requires an advanced level of organization at the micro-biological stage. (53) The Natural Selection offers a helping hand to extend the spirit of a free world. (54) Natural selection favours those genes that manipulate the world to ensure their own propagation. (55) The descendants of a very few, transformed by natural selection, make up the world today. (56) It is but a short step from this to natural selection and evolution in the laboratory. (57) It is dangerous to suppose that natural selection wants this or that. (58) Any adaptation in a male which enables him to copulate with more females will be strongly favoured by natural selection. (59) Apparently, natural selection favored creatures that could get rid of these tiny quantities of ethanol. (60) Variety is the raw material of evolution, used up as natural selection takes its course.