ernst mayr Quotes


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. Ernst Mayr Evolution 73
Evolution thus is merely contingent on certain processes articulated by Darwin: variation and selection. Ernst Mayr Evolution 64
All I claimed was that when a drastic change occurs, it occurs in a relatively small and isolated population. Ernst Mayr Uncategorized 52
Most of them are doomed to rapid extinction, but a few may make evolutionary inventions, such as physiological, ecological, or behavioral innovations that give these species improved competitive potential. Ernst Mayr Uncategorized 51
Indeed, I was unable to find any evidence whatsoever of the occurrence of a drastic evolutionary acceleration and genetic reconstruction in widespread, populous species. Ernst Mayr Uncategorized 48
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. Ernst Mayr Evolution 43
It seems to me that for Darwin the pulsing of evolutionary rates was a strictly vertical phenomenon. Ernst Mayr Uncategorized 41
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. Ernst Mayr Uncategorized 40
Life is simply the reification of the process of living. Ernst Mayr Life 37
As a consequence, geneticists described evolution simply as a change in gene frequencies in populations, totally ignoring the fact that evolution consists of the two simultaneous but quite separate phenomena of adaptation and diversification. Ernst Mayr Evolution 35
Living in an entirely different physical as well as biotic environment, such a population would have unique opportunities to enter new niches and to select novel adaptive pathways. Ernst Mayr Uncategorized 35
I did not claim that speciation occurs only in founder populations. Ernst Mayr Uncategorized 31

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ernst mayr Quotes

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