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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... variability is due toour domestic productions having been raised under conditions of life not so uniform as, and somewhat different from, those to which the parent species had been exposed under nature.There is, also,some probability ...
... variability is due toour domestic productions having been raised under conditions of life not so uniform as, and somewhat different from, those to which the parent species had been exposed under nature.There is, also,some probability ...
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... variability, and has probably played a more important part in the formation of our domestic races. We see in definite variability in the endless slight peculiarities which.
... variability, and has probably played a more important part in the formation of our domestic races. We see in definite variability in the endless slight peculiarities which.
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... variability is thus induced, partly from the fact of this system being extremely sensitive to any change in the conditions, and partlyfrom the similarity, as Kolreuterand othershave remarked, betweenthe variability which follows from ...
... variability is thus induced, partly from the fact of this system being extremely sensitive to any change in the conditions, and partlyfrom the similarity, as Kolreuterand othershave remarked, betweenthe variability which follows from ...
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... variability of the ass and goose, or the small power of endurance of warmth bythe reindeer, or of cold by the common camel, preventedtheir domestication?Icannot doubt that ifotheranimals and plants, equal in number to our domesticated ...
... variability of the ass and goose, or the small power of endurance of warmth bythe reindeer, or of cold by the common camel, preventedtheir domestication?Icannot doubt that ifotheranimals and plants, equal in number to our domesticated ...
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... variability. We can notsuppose that all the breeds weresuddenly producedasperfect and asuseful as wenow seethem; indeed, in many cases,we know that this has not been their history. The key is man's powerof accumulative selection: nature ...
... variability. We can notsuppose that all the breeds weresuddenly producedasperfect and asuseful as wenow seethem; indeed, in many cases,we know that this has not been their history. The key is man's powerof accumulative selection: nature ...
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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