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. |
Результаты поиска по книге
Результаты 1 – 5 из 7
Стр.
... observed with plants and animals when reared under new or unnatural conditions. Many facts clearly show how eminently susceptiblethe reproductive systemisto veryslight changes in the surrounding conditions. Nothing ismore easy ...
... observed with plants and animals when reared under new or unnatural conditions. Many facts clearly show how eminently susceptiblethe reproductive systemisto veryslight changes in the surrounding conditions. Nothing ismore easy ...
Стр.
... observed:I crossed some whitefantails, which breed very true, with some black barbs—and it so happens that blue varieties of barbsare so rare that I never heard of an instanceinEngland;and themongrels wereblack, brownand mottled.Ialso ...
... observed:I crossed some whitefantails, which breed very true, with some black barbs—and it so happens that blue varieties of barbsare so rare that I never heard of an instanceinEngland;and themongrels wereblack, brownand mottled.Ialso ...
Стр.
... observations, purposely made, onthemost distinct breeds. Now, hardly any cases have been ascertained with certainty of hybrids from twoquite distinct species ofanimals being perfectly fertile. Some authors believethatlongcontinued ...
... observations, purposely made, onthemost distinct breeds. Now, hardly any cases have been ascertained with certainty of hybrids from twoquite distinct species ofanimals being perfectly fertile. Some authors believethatlongcontinued ...
Стр.
... observation—perhaps never, the case. The law of correlated variation, the importance of which should never be overlooked, willensure somedifferences; but,as a generalrule, itcannotbe doubted that the continued selection of slight ...
... observation—perhaps never, the case. The law of correlated variation, the importance of which should never be overlooked, willensure somedifferences; but,as a generalrule, itcannotbe doubted that the continued selection of slight ...
Стр.
... observed, with some dimorphic plants. Itcertainly at first appears a highlyremarkable fact that the same female butterflyshould have thepowerof producingat the same timethreedistinct female forms and a male; and thatan hermaphrodite ...
... observed, with some dimorphic plants. Itcertainly at first appears a highlyremarkable fact that the same female butterflyshould have thepowerof producingat the same timethreedistinct female forms and a male; and thatan hermaphrodite ...
Содержание
Раздел 24 | |
Раздел 25 | |
Раздел 26 | |
Раздел 27 | |
Раздел 28 | |
Раздел 29 | |
Раздел 30 | |
Раздел 31 | |
Раздел 9 | |
Раздел 10 | |
Раздел 11 | |
Раздел 12 | |
Раздел 13 | |
Раздел 14 | |
Раздел 15 | |
Раздел 16 | |
Раздел 17 | |
Раздел 18 | |
Раздел 19 | |
Раздел 20 | |
Раздел 21 | |
Раздел 22 | |
Раздел 23 | |
Раздел 32 | |
Раздел 33 | |
Раздел 34 | |
Раздел 35 | |
Раздел 36 | |
Раздел 37 | |
Раздел 38 | |
Раздел 39 | |
Раздел 40 | |
Раздел 41 | |
Раздел 42 | |
Раздел 43 | |
Раздел 44 | |
Раздел 45 | |
Раздел 46 | |
Другие издания - Просмотреть все
Часто встречающиеся слова и выражения
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