On The Origin Of SpeciesHarper Collins, 22 июл. 2014 г. - Всего страниц: 336 Published in 1859, The Origin of Species by Charles Darwin introduced the theory of natural selection to a newly-receptive public. As a young naturalist on the second voyage of HMS Beagle (1831-36), Darwin collected many plant and animal specimens, and it was his close examination of them that eventually led to his theories on evolution and natural selection. HarperPerennial Classics brings great works of literature to life in digital format, upholding the highest standards in ebook production and celebrating reading in all its forms. Look for more titles in the HarperPerennial Classics collection to build your digital library. |
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... naturalists,some of them personallyunknown tome.I cannot,however, letthis opportunity pass without expressing my ... naturalist, reflecting on the mutual affinities of organicbeings, on their embryological relations, their geographical ...
... naturalists,some of them personallyunknown tome.I cannot,however, letthis opportunity pass without expressing my ... naturalist, reflecting on the mutual affinities of organicbeings, on their embryological relations, their geographical ...
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... Naturalists continually refer to external conditions, suchas climate, food, etc., as the only possible cause of variation. In one limited sense, as we shall hereafter see,this may be true; butitis preposterousto attribute tomereexternal ...
... Naturalists continually refer to external conditions, suchas climate, food, etc., as the only possible cause of variation. In one limited sense, as we shall hereafter see,this may be true; butitis preposterousto attribute tomereexternal ...
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Charles Darwin. commonly neglected by naturalists. From these considerations, I shall devote the first chapter of this abstractto variationunder domestication.We shall thus see that a large amount of hereditary modification is at least ...
Charles Darwin. commonly neglected by naturalists. From these considerations, I shall devote the first chapter of this abstractto variationunder domestication.We shall thus see that a large amount of hereditary modification is at least ...
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... naturalists until recently entertained, and which Iformerly entertained—namely, thateach specieshas been independently created—is erroneous.I am fully convincedthat species are not immutable; but that those belongingto what are ...
... naturalists until recently entertained, and which Iformerly entertained—namely, thateach specieshas been independently created—is erroneous.I am fully convincedthat species are not immutable; but that those belongingto what are ...
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... organs are not easily affected;sowill someanimals and plants withstand domestication or cultivation,and vary very slightly—perhaps hardlymore thanin a state of nature. Some naturalists have maintained that all variations are connected with.
... organs are not easily affected;sowill someanimals and plants withstand domestication or cultivation,and vary very slightly—perhaps hardlymore thanin a state of nature. Some naturalists have maintained that all variations are connected with.
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according adapted admit advantage allied America amount animals appear become believe belonging birds breeds cause certain characters climate closely color common compared complex considerable considered continued crossed descendants developed difficulty distinct domestic doubt effects existing extinct extremely facts favourable fertility flowers formation forms genera genus geological give given greater groups habits Hence hybrids important increase individuals inhabitants inherited insects instance instincts intermediate inthe islands kind known laws less living look manner means modification namely natural selection naturalists nearly observed occasionally occur offspring ofthe onthe organs parent perfect period plants points present preserved principle probably produced remarked represented resemblance respect seeds seems seen separated shown similar single slight sometimes species stage sterility structure successive suppose theory thesame tothe variability variations varieties various vary whole widely young