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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... seems clear that organic beings must be exposed during several generations to new conditions to cause any great amount ofvariation; andthat,when theorganisation has once beguntovary, it generally continues varying for many generations ...
... seems clear that organic beings must be exposed during several generations to new conditions to cause any great amount ofvariation; andthat,when theorganisation has once beguntovary, it generally continues varying for many generations ...
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... seems to bemuch the more important; for nearly similar variations sometimes arise under, as far as we can judge, dissimilar conditions;and, onthe otherhand,dissimilar variationsarise under conditions which appearto benearly uniform ...
... seems to bemuch the more important; for nearly similar variations sometimes arise under, as far as we can judge, dissimilar conditions;and, onthe otherhand,dissimilar variationsarise under conditions which appearto benearly uniform ...
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... seems probable. Manylaws regulate variation, somefew of whichcan be dimly seen, and will hereafter be briefly discussed. I will here only allude to what may be calledcorrelated variation. Important changes in the embryoor larva will ...
... seems probable. Manylaws regulate variation, somefew of whichcan be dimly seen, and will hereafter be briefly discussed. I will here only allude to what may be calledcorrelated variation. Important changes in the embryoor larva will ...
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... seems to have become plastic, and departs ina slight degree from that of the parentaltype. Any variationwhich isnot inherited is unimportantfor us.But the number and diversity of inheritable deviations of structure, both those of slight ...
... seems to have become plastic, and departs ina slight degree from that of the parentaltype. Any variationwhich isnot inherited is unimportantfor us.But the number and diversity of inheritable deviations of structure, both those of slight ...
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... seems to menot improbable that if we could succeed in naturalising, or wereto cultivate, during manygenerations, the several races, for instance, ofthe cabbage, in verypoor soil—in which case, however, some effect would havetobe ...
... seems to menot improbable that if we could succeed in naturalising, or wereto cultivate, during manygenerations, the several races, for instance, ofthe cabbage, in verypoor soil—in which case, however, some effect would havetobe ...
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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