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Ernst Mayr

"I had found again and again that the most aberrant population of a species - often having reached species rank, and occasionally classified even as a separate genus - occurred at a peripheral location, indeed usually at the most isolated peripheral location."

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"I had found again and again that the most aberrant population of a species - often having reached species rank, and occasionally classified even as a separate genus - occurred at a peripheral location, indeed usually at the most isolated peripheral location."

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Donna Grant

"I had found again and again that the most aberrant population of a species - often having reached species rank, and occasionally classified even as a separate genus - occurred at a peripheral location, indeed usually at the most isolated peripheral location."

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Personal Development

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Donna Grant

"The optimum population is, then, less than the maximum."

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Personal Development

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Donna Grant

"Our population is headed for a stable plateau, which means an aging population."

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Personal Development

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Donna Grant

"We are 5 percent of the global population and consume a third of the total resources - on some level we should all feel guilty relative to the world."

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Donna Grant

"There is a very large chunk of our population who firmly believe in extraterrestrials."

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Donna Grant

"My patient population has a low recidivism rate, but if they haven't made up their minds that it is permanent, then of course, they will fail."

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Donna Grant

"Population, when unchecked, goes on doubling itself every 25 years or increases in a geometrical ratio."

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Donna Grant

"You wouldn't believe how the town was named for me. I was met by the whole population, headed by the mayor."

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Donna Grant

"In order to stabilize world population, we must eliminate 350,000 per day."

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Donna Grant

"The divergence of songs in the new population away from those in the progenitor population would only be prevented if these processes were balanced by repeated immigration and subsequent breeding: song flow."

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Ernst Mayr
"All I claimed was that when a drastic change occurs, it occurs in a relatively small and isolated population."

Change

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Ernst Mayr
"I had found again and again that the most aberrant population of a species - often having reached species rank, and occasionally classified even as a separate genus - occurred at a peripheral location, indeed usually at the most isolated peripheral location."

Population

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Ernst Mayr
"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."

Change

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Ernst Mayr
"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."

Change

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Ernst Mayr
"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."

Success

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Ernst Mayr
"Life is simply the reification of the process of living."

Life

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Ernst Mayr
"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."

Evolution

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Ernst Mayr
"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."

Invention

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Ernst Mayr
"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."

Environment

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Ernst Mayr
"Evolution thus is merely contingent on certain processes articulated by Darwin: variation and selection."

Evolution

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