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Barriers Quote by Ernst Mayr

“A species consists of a group of populations which replace each other geographically or ecologically and of which the neighboring ones integrate or hybridise wherever they are in contact or which are potentially capable of doing so (with one or more of the populations) in those cases where contact…” quote by Ernst Mayr — Download Open image

“A species consists of a group of populations which replace each other geographically or ecologically and of which the neighboring ones integrate or hybridise wherever they are in contact or which are potentially capable of doing so (with one or more of the populations) in those cases where contact is prevented by geographical or ecological barriers.”

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Barriers Capable Cases Contact Ecological Evolution Groups Integrating Population Science Species

More by Ernst Mayr

There is more to biology than rats, Drosophila, Caenorhabditis, and E. coli.

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“The funny thing is if in England, you ask a man in the street who the greatest living Darwinian is, he will say Richard Dawkins . And indeed, Dawkins has done a marvelous job of popularizing Darwinism . But Dawkins ' basic theory of the gene being the object of evolution is totally non- Darwinian .”

The history of science knows scores of instances where an investigator was in the possession of all the important facts for a new theory…

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most scientific problems are far better understood by studying their history than their logic.

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I did not claim that speciation occurs only in founder populations.

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Evolution, thus, is merely contingent on certain processes articulated by Darwin: variation and selection. No longer is a fixed object transformed, as in transformational…

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In Earth, among millions of lineages or organisms and perhaps 50 billion speciation events, only one led to high intelligence ; this makes me…

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

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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…

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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…

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Our understanding of the world is achieved more effectively by conceptual improvements than by discovery of new facts

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Explore all 51 Ernst Mayr quotes

More Barriers quotes

Your aunt and uncle will be proud, though, won't they?" said Hermione as they got off the train and joined the crowd thronging toward…

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The gear you can't afford is not the barrier keeping you from success. Gear has very little to do with photography.

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All of the barriers to innovation in the energy sector are arguments for a big commitment to public investment. Only the public sector can…

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The "health, education, and welfare" section of government is another boondoggle. First we manufacture indigent and superfluous people by legal monopolies in land, money and idea patents, erecting tariff barriers to protect monopolies from foreign competition, and taxing laborers to subsidize rich farmers and privileged manufacturers. Then we create "social workers, " etc., to care for them and thereby establish…

Laurance Labadie

Security is a component of everyday life that one spending time in Washington, D.C., gets accustomed to. Metal detectors, police vehicle barriers and heavily-armed…

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I feel that there are a few things in the world without cultural barriers.

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English literature is a glorious inheritance which is open to all - there are no barriers, no coupons, and no restrictions. In the English…

Winston Churchill

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Friendship embraces innumerable ends; turn where you will it is ever at your side; no barrier shuts it out; it is never untimely and…

Marcus Tullius Cicero

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I've cosponsored legislation to establish a lend-lease program to simplify bureaucratic barriers and allow a speedier transfer of U.S. military equipment to Ukraine.

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Don't be afraid of what you want. This is your time. The barriers are down.

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Fear is the single biggest barrier to creativity. Unless we're brave enough to risk looking foolish, we'll inevitably find ourselves sticking to the status…

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He looked at my lips. I suddenly found myself wanting to lick his. 'Yes,' he replied, his eyes going molten. My breath caught in my throat as he reached out and brushed a strand of hair where it had flown across my cheek. 'I believe we do have unfinished business.' 'Good.' I gulped, suddenly one big mass of tingling body…

Katie MacAlister

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