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It seems to me that for Darwin the pulsing of evolutionary rates was a strictly vertical phenomenon.

Ernst Mayr

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Ernst Mayr
Age: 100 †
Born: 1904
Born: July 5
Died: 2005
Died: February 3
Biologist
Curator
Ornithologist
Philosopher
University Teacher
Writer
Zoologist
Kempten/Allgäu
Ernst Walter Mayr
E. Mayr
E. W. Mayr
Phenomenon
Rate
Seems
Pulsing
Vertical
Darwin
Evolutionary
Strictly
Rates

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most scientific problems are far better understood by studying their history than their logic.
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Scientific progress consists in the development of new concepts.
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The major novelty of my theory was its claim that the most rapid evolutionary change does not occur in widespread, populous species, as claimed by Most geneticists, but in small founder populations.
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In neither his definition nor the examples illustrating what memes are does Dawkins mention anything that would distinguish memes from concepts.
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Indeed, I was unable to find any evidence whatsoever of the occurrence of a drastic evolutionary acceleration and genetic reconstruction in widespread, populous species.
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I feel that one species, mankind, doesn't have the right to exterminate
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Definitions are temporary verbalizations of concepts, and concepts- particularly difficult concepts- are usually revised repeatedly as our knowledge and understanding grows.
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According to the concept of transformational evolution, first clearly articulated by Lamarck, evolution consists of the gradual transformation of organisms from one condition of existence to another.
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Evolution ... is opportunistic, hence unpredictable.
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I have the honesty to say I'm an Atheist. There is nothing that supports the idea of a personal God.
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New gene pools are generated in every generation, and evolution takes place because the successful individuals produced by these gene pools give rise to the next generation.
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Given the fact of evolution, one would expect the fossils to document a gradual steady change from ancestral forms to the descendants. But this is not what the paleontologist finds. Instead, he or she finds gaps in just about every phyletic series.
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Wherever we look at the living biota … discontinuities are overwhelmingly frequent…The discontinuities are even more striking in the fossil record. New species usually appear in the fossil record suddenly, not connected with their ancestors by a series of intermediates.
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In those early years in New York when I was a stranger in a big city, it was the companionship and later friendship which I was offered in the Linnean Society that was the most important thing in my life.
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The history of science knows scores of instances where an investigator was in the possession of all the important facts for a new theory but simply failed to ask the right questions.
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A new species develops if a population which has become geographically isolated from its parental species acquires during this period of isolation characters which promote or guarantee reproductive isolation when the external barriers break down.
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There is more to biology than rats, Drosophila, Caenorhabditis, and E. coli.
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A species is a reproductive community of populations reproductively isolated from others that occupies a specific niche in nature.
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anyone who writes about Darwin's theory of evolutionin the singular, without segregating the theories of gradual evolution, common descent, speciation, and the mechanism of natural selection, will be quite unable to discuss the subject competently.
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To take an unequivocal stand, it seems to me, is of greater heuristic value and far more likely to stimulate constructive criticism than to evade the issue.
Ernst Mayr