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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... various organs. Withrespectto whatI havecalled the indirect actionof changedconditions, namely,through the reproductive systemof being affected, we may infer that variability is thus induced, partly from the fact of this system being ...
... various organs. Withrespectto whatI havecalled the indirect actionof changedconditions, namely,through the reproductive systemof being affected, we may infer that variability is thus induced, partly from the fact of this system being ...
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... various, unknown, or but dimly understood laws ofvariation are infinitely complexand diversified. Itis well worthwhile carefully to study the several treatises on some of our old cultivatedplants, as on the hyacinth, potato, eventhe ...
... various, unknown, or but dimly understood laws ofvariation are infinitely complexand diversified. Itis well worthwhile carefully to study the several treatises on some of our old cultivatedplants, as on the hyacinth, potato, eventhe ...
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... various breeds, and esculent vegetables, for an unlimited number of generations, would be opposed to all experience. CHARACTER OF DOMESTIC VARIETIES; DIFFICULTY OF DISTINGUISHING BETWEEN VARIETIES AND SPECIES; ORIGIN OF DOMESTIC ...
... various breeds, and esculent vegetables, for an unlimited number of generations, would be opposed to all experience. CHARACTER OF DOMESTIC VARIETIES; DIFFICULTY OF DISTINGUISHING BETWEEN VARIETIES AND SPECIES; ORIGIN OF DOMESTIC ...
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... various black marks in all the breeds, bothwhen kept pureand when crossed—and lastly,the mongrel offspringbeing perfectly fertile—from theseseveral reasons, takentogether, wemay safely conclude thatallour domestic breeds are descended ...
... various black marks in all the breeds, bothwhen kept pureand when crossed—and lastly,the mongrel offspringbeing perfectly fertile—from theseseveral reasons, takentogether, wemay safely conclude thatallour domestic breeds are descended ...
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... various breeds of sheep fitted either for cultivated land ormountain pasture, with the wool of onebreed good forone purpose,andthat of another breedforanother purpose; when we compare the many breeds of dogs, eachgood for man in ...
... various breeds of sheep fitted either for cultivated land ormountain pasture, with the wool of onebreed good forone purpose,andthat of another breedforanother purpose; when we compare the many breeds of dogs, eachgood for man in ...
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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