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664 results found.
67 pages of results.
31. On the Nature of Natural Selection and Speciation [Journals] [Aeon]
... Many scientists have recognized this fact, but it seems to be hidden from most of our institutions of higher learning and the authors of our textbooks. Fitness aside, a biological mechanism for change in response to environmental pressures does exist. Conventional wisdom holds that the possible extent of such change is virtually unlimited. We have seen that the development ... 12) But to suggest that the fossils offer any such demonstration is only wishful thinking. Dr. Pierre P. Grasse, respected as one of the world's greatest living biologists, suggests adding an epitaph to "every book on evolution": From the almost total absence of fossil evidence relative to the origin of phyla, it follows that ...
32. Monitor [Journals] [SIS Workshop]
... raising were well known 40 years ago but the climate was such that no one in the establishment dared to face up to them; and as "Standard textbooks on evolutionary biology and palaeontology hardly mention extinction" this state of affairs seems largely to persist. Raup makes a strong point that the known fossil record (probably) comprises not more ... well established, but have not involved changes to new and viable patterns. Thus while the results "flout all the rules of molecular biology", and are already forcing biologists to rethink some of their most cherished tenets, they do not directly relate to the origin of new species. One indirect implication for evolution is however evident. Where ...
... errors of metabolism. This work stimulated his interest in the origin and evolutionary consequence of genetic mutations. Professor Palmer is a Chartered Biologist and a Fellow of the Institute of Biology. He is the author of Understanding Enzymes (now in its third edition) and Principles of Enzymology for Technological Applications. In addition, he is author/co-author ... 1973 for research in the field of inborn errors of metabolism. This work stimulated his interest in the origin and evolutionary consequence of genetic mutations. Professor Palmer is a Chartered Biologist and a Fellow of the Institute of Biology. He is the author of Understanding Enzymes (now in its third edition) and Principles of Enzymology for Technological Applications. ...
34. Directed Mutation in Bacteria [Journals] [SIS Workshop]
... and error.... We describe here a few experiments and some circumstantial evidence suggesting that bacteria can choose which mutations they should produce." It appears that molecular biology is no longer as reductionist as it was; it is now accepted that in some genetic systems instability and extreme variability can be switched on in conditions of stress. ... bacteria there is always the let out that the results do not apply to higher organisms. However, it is precisely because of studies of the mutation rates in bacteria that biologists have come to believe that mutations arise continuously and without any consideration for their utility'. This has become the basic evolutionary doctrine of random variation upon which the forces ...
35. Global Catastrophes: New Evidence from Astronomy, Biology and Archaeology [Journals] [SIS Review]
... From: SIS Review Vol VI No 4 (1984) Home | Issue Contents Focus S.I .S . Meetings Global Catastrophes: New Evidence from Astronomy, Biology and Archaeology The 29th October 1983 saw the first public meeting of the S.I .S . outside London since the Glasgow Conference. Held in a lecture theatre ... extinctions caused by extraterrestrial bodies. Unfortunately, Darwin had linked his ideas of evolution to the uniformitarianism of Lyell, resulting in a gradualistic model of evolution to which the evolutionary biologists have tended to cling tenaciously. Dr Palmer outlined the beliefs of the Modern or neo-Darwinian Synthesis, and argued that even the powerful medical evidence against it, namely that ...
36. Darwin's Dangerous Idea: A Critique [Journals] [Aeon]
... al, of SUNY Stony Brook, who pushed the origin and development of vertebrate precursors back from 545 million years ago, at the beginning of the so-called Cambrian Explosion of biological lifeforms, to the undifferentiated Proterozoic era 1.2 billion years ago. This is substantially earlier than the opening of the Phanerozoic period that takes in the three major ... preparing to address this contingency even if it resurrects Hoyle and Wickramasinghe's idea of panspermia, [1 ] which puts everything off-planet and into the realm of "skyhooks." Biologists in general have previously considered this to be "Hoyle's Howler." [2 ] Well over a century ago, Charles Darwin did not have any such futuristic acumen ...
37. Metamorphic Evolution [Journals] [Velikovskian]
... idea of a process which could go rolling on and on indefinitely was new. Finally, a code in which several things would specify one thing, was quite new in biology. It enabled DNA, with its mere four units, to specify the composition of proteins with their twenty components. "Incidentally, the four bases, A, ... Cohen, one of the leaders in the field, commented in some surprise: `The discovery of such a fundamentally different recombinatorial process, at a time when many molecular biologists believed virtually all the important aspects of bacterial genetics were understood in principle . . . leads one to wonder whether still fundamental new and significant basic biological processes remain to ...
38. Monitor [Journals] [SIS Review]
... formulate a philosophy of chemistry to match the quantum mechanics and natural selection philosophies of physicists and biologists. They resent the physics imperialism' which claims that everything in chemistry and biology can be explained by some fundamental laws of physics. Important facets of chemistry cannot be explained by quantum mechanics and chemists claim that they live in the real' world ... New Scientist 21.11.98, pp. 34-37 Chemists are trying to formulate a philosophy of chemistry to match the quantum mechanics and natural selection philosophies of physicists and biologists. They resent the physics imperialism' which claims that everything in chemistry and biology can be explained by some fundamental laws of physics. Important facets of chemistry cannot be ...
39. Darwinian Diary, part I (Book reviews) [Journals] [SIS Review]
... (1744-1829), whose theory of evolution preceded Darwin's. However, his theory of "the inheritance of acquired characteristics" as a major force in evolution is a notorious biological heresy. Despite recent attempts there is still no firm experimental proof of a Lamarckian mechanism. Recent findings in molecular genetics have not contributed anything new to evolutionary theory, ... the clarity of the illustrations. Evolution Now is similar in concept, being an anthology of previously-published papers: the majority are from Nature, but also included are ones from Biologist, Palaeobiology, Science and other journals. The papers are grouped into six sections: the origin of life; the evolution of the genome; Lamarckian inheritance and the ...
40. Catastrophism and Evolution [Articles]
... break (46). Not everyone accepts that the fossil evidence supports punctuated equilibrium rather than phyletic gradualism (47). However, almost everyone in the field of evolutionary biology agrees that natural selection plays an important part in evolution, regardless of the precise mechanism involved. Most would also be prepared to concede that genetic drift, the random ... ). More recently, Sir Fred Hoyle has argued that asteroid impacts trigger the beginning and end of ice ages (24). Nevertheless, the prevailing tendency of evolutionary biologists has been to follow Darwin's belief that "Nature does not make jumps" (18), a dictum attributable to Linnaeus. The Modern Synthesis, or Neo-Darwinism, ...
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