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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... principle of inheritance, any selected variety willtendto propagate its new and modified form. This fundamental subject ofnatural selection willbetreatedat some lengthinthe fourthchapter; andwe shall thenseehow natural selection almost ...
... principle of inheritance, any selected variety willtendto propagate its new and modified form. This fundamental subject ofnatural selection willbetreatedat some lengthinthe fourthchapter; andwe shall thenseehow natural selection almost ...
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... principle only by theoretical writers. When any deviation of structure often appears, and we see it in the fatherand child,we cannot tell whether itmay notbedue to thesamecause having acted on both;but when among individuals ...
... principle only by theoretical writers. When any deviation of structure often appears, and we see it in the fatherand child,we cannot tell whether itmay notbedue to thesamecause having acted on both;but when among individuals ...
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... principle of reversion to ancestral characters, if all the domestic breedsare descendedfromthe rockpigeon. Butif we deny this, wemustmake one ofthe two following highly improbable suppositions. Either,first,that all the several imagined ...
... principle of reversion to ancestral characters, if all the domestic breedsare descendedfromthe rockpigeon. Butif we deny this, wemustmake one ofthe two following highly improbable suppositions. Either,first,that all the several imagined ...
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... PRINCIPLES OF SELECTION ANCIENTLY FOLLOWED, AND THEIR EFFECTS. Let usnowbriefly consider the steps by whichdomestic races have been produced, either from oneor from several allied species. Some effect may be attributed to the direct and ...
... PRINCIPLES OF SELECTION ANCIENTLY FOLLOWED, AND THEIR EFFECTS. Let usnowbriefly consider the steps by whichdomestic races have been produced, either from oneor from several allied species. Some effect may be attributed to the direct and ...
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... maybesaid tohave madeforhimself useful breeds. The great power ofthis principle of selection is not hypothetical. It is certain that several of our eminent breeders have, even within a single lifetime, modified to a large.
... maybesaid tohave madeforhimself useful breeds. The great power ofthis principle of selection is not hypothetical. It is certain that several of our eminent breeders have, even within a single lifetime, modified to a large.
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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