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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... kind of selection is, infact, likewisefollowed; forhardly any oneisso carelessastobreed from his worstanimals. In regard to plants, thereisanother means of observing the accumulated effects of selection—namely, by comparing the ...
... kind of selection is, infact, likewisefollowed; forhardly any oneisso carelessastobreed from his worstanimals. In regard to plants, thereisanother means of observing the accumulated effects of selection—namely, by comparing the ...
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... kind inthe country. But, forour purpose, a form of selection, which may be called unconscious, and which results from everyone trying to possess and breed from the best individual animals, ismoreimportant. Thus, amanwho intends keeping ...
... kind inthe country. But, forour purpose, a form of selection, which may be called unconscious, and which results from everyone trying to possess and breed from the best individual animals, ismoreimportant. Thus, amanwho intends keeping ...
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... kind could never be recognised unless actual measurements orcareful drawings ofthe breedsin questionhave been madelong ago, whichmay servefor comparison.Insome cases, however, unchanged, or butlittle changed, individuals ofthesame breed ...
... kind could never be recognised unless actual measurements orcareful drawings ofthe breedsin questionhave been madelong ago, whichmay servefor comparison.Insome cases, however, unchanged, or butlittle changed, individuals ofthesame breed ...
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... kind everdo appear in astate of nature and arecapable of reproduction (which isnot always the case), as they occurrarely and singly, their preservation would depend on unusually favourable circumstances. They would, also, during ...
... kind everdo appear in astate of nature and arecapable of reproduction (which isnot always the case), as they occurrarely and singly, their preservation would depend on unusually favourable circumstances. They would, also, during ...
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... kind of plant or on onegroup of plants;somefeed indiscriminately on manykinds, but donotin consequence vary.In severalcases, however, insects found livingon different plants,havebeen observed byMr. Walsh to present in their ...
... kind of plant or on onegroup of plants;somefeed indiscriminately on manykinds, but donotin consequence vary.In severalcases, however, insects found livingon different plants,havebeen observed byMr. Walsh to present in their ...
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Другие издания - Просмотреть все
The Origin of Species: By Means of Natural Selection Or the Preservation of ... Charles Darwin Недоступно для просмотра - 2011 |
On the Origin of Species: By Means of Natural Selection; Or the Preservation ... Charles Darwin Недоступно для просмотра - 2017 |
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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