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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... closely allied species, we generallyperceivein each domesticrace,as already remarked, lessuniformityof character thanintrue species. Domestic races often have a somewhat monstrous character; by which I mean, that, although differing ...
... closely allied species, we generallyperceivein each domesticrace,as already remarked, lessuniformityof character thanintrue species. Domestic races often have a somewhat monstrous character; by which I mean, that, although differing ...
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... ; andthatsomeof these ancient breeds closely resemble, or are even identical with, those still existing. But this only throws far backward the history of civilisation, and shows that animals were domesticated at a much.
... ; andthatsomeof these ancient breeds closely resemble, or are even identical with, those still existing. But this only throws far backward the history of civilisation, and shows that animals were domesticated at a much.
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... closely related toeachother. Buttoextend itsofar asto suppose that species, aboriginally as distinctas carriers, tumblers,pouters, and fantails now are, should yield offspring perfectly fertile, inter se, seems to me rash in the extreme ...
... closely related toeachother. Buttoextend itsofar asto suppose that species, aboriginally as distinctas carriers, tumblers,pouters, and fantails now are, should yield offspring perfectly fertile, inter se, seems to me rash in the extreme ...
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... closely allied subbreeds. And when across has been made, the closest selection isfarmore indispensable even than in ordinary cases. If selection consisted merely in separating some very distinct variety and breeding from.
... closely allied subbreeds. And when across has been made, the closest selection isfarmore indispensable even than in ordinary cases. If selection consisted merely in separating some very distinct variety and breeding from.
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... closely similar to other forms, or areso closely linked tothem by intermediate gradations, that naturalists do not like to rank them as distinct species, are in several respects the most important for us. We have everyreason to ...
... closely similar to other forms, or areso closely linked tothem by intermediate gradations, that naturalists do not like to rank them as distinct species, are in several respects the most important for us. We have everyreason to ...
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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