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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... varieties when intercrossed; and fourthly, the imperfectionofthe geological record.In the nextchapter I shall consider the geologicalsuccession of organicbeings throughout time; in the twelfth and thirteenth, their geographical ...
... varieties when intercrossed; and fourthly, the imperfectionofthe geological record.In the nextchapter I shall consider the geologicalsuccession of organicbeings throughout time; in the twelfth and thirteenth, their geographical ...
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Charles Darwin. varieties to drop off; and one of the “crackers” (i.e. Virginia squatters) added, “we select the black members of a litter for raising, asthey alone have a good chance of living.” Hairless dogs have imperfect teeth ...
Charles Darwin. varieties to drop off; and one of the “crackers” (i.e. Virginia squatters) added, “we select the black members of a litter for raising, asthey alone have a good chance of living.” Hairless dogs have imperfect teeth ...
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... varieties, when run wild, gradually but invariably revert in character to their aboriginal stocks.Hence it has been argued that no deductions can be drawn from domestic races to species in a state of nature.I haveinvain endeavouredto ...
... varieties, when run wild, gradually but invariably revert in character to their aboriginal stocks.Hence it has been argued that no deductions can be drawn from domestic races to species in a state of nature.I haveinvain endeavouredto ...
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... VARIETIES; DIFFICULTY OF DISTINGUISHING BETWEEN VARIETIES AND SPECIES; ORIGIN OF DOMESTIC VARIETIES FROM ONE OR MORE SPECIES. When we look to the hereditary varieties or races of our domestic animals and plants, and compare them with ...
... VARIETIES; DIFFICULTY OF DISTINGUISHING BETWEEN VARIETIES AND SPECIES; ORIGIN OF DOMESTIC VARIETIES FROM ONE OR MORE SPECIES. When we look to the hereditary varieties or races of our domestic animals and plants, and compare them with ...
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... varieties when crossed—a subject hereafter to be discussed), domestic races of the same species differ from each other in the same manner as do theclosely allied species of the same genus in a stateof nature, but thedifferences inmost ...
... varieties when crossed—a subject hereafter to be discussed), domestic races of the same species differ from each other in the same manner as do theclosely allied species of the same genus in a stateof nature, but thedifferences inmost ...
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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