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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... instances), yet having their reproductive system so seriously affected by unperceived causesas to fail to act, we need ... instance, rabbits and ferrets kept in hutches—showing thattheir reproductive organs are not easily affected;sowill ...
... instances), yet having their reproductive system so seriously affected by unperceived causesas to fail to act, we need ... instance, rabbits and ferrets kept in hutches—showing thattheir reproductive organs are not easily affected;sowill ...
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... instance, budson peachtrees producing nectarines, and buds on common rosesproducing mossroses— we clearly seethat thenature ofthe conditionsisof subordinate importance in comparison withthe nature of the organism in determining each ...
... instance, budson peachtrees producing nectarines, and buds on common rosesproducing mossroses— we clearly seethat thenature ofthe conditionsisof subordinate importance in comparison withthe nature of the organism in determining each ...
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... instance of the effects ofuse. Notoneof ourdomesticanimals can benamed which has notin some country drooping ears ... instances of correlation arequite whimsical;thus cats which are entirely white and have blueeyesare generally deaf; but ...
... instance of the effects ofuse. Notoneof ourdomesticanimals can benamed which has notin some country drooping ears ... instances of correlation arequite whimsical;thus cats which are entirely white and have blueeyesare generally deaf; but ...
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... instance, ofthe cabbage, in verypoor soil—in which case, however, some effect would havetobe attributedto the DEFINITE action of the poor soil—that they would, to a large extent, or even wholly, revert to the wild aboriginal stock.
... instance, ofthe cabbage, in verypoor soil—in which case, however, some effect would havetobe attributedto the DEFINITE action of the poor soil—that they would, to a large extent, or even wholly, revert to the wild aboriginal stock.
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... instance,ofthe many foxes—inhabiting the different quarters of the world. I do notbelieve, asweshall presently see,thatthe whole amount of difference between the several breeds of the dog has been produced under domestication; I believe ...
... instance,ofthe many foxes—inhabiting the different quarters of the world. I do notbelieve, asweshall presently see,thatthe whole amount of difference between the several breeds of the dog has been produced under domestication; I believe ...
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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