The Origin of Species by Means of Natural Selection, Or, The Preservation of Favored Races in the Struggle for Life: Reprinted from the Sixth London EditionBurt, 1890 - 538ÆäÀÌÁö |
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... extremely slight or strongly marked , which appear among many individuals living together , may be considered as the indefinite effects of the condi- tions of life on each individual organism , in nearly the same manner as the chill ...
... extremely slight or strongly marked , which appear among many individuals living together , may be considered as the indefinite effects of the condi- tions of life on each individual organism , in nearly the same manner as the chill ...
142 ÆäÀÌÁö
... extremely little even in distinct genera ; but in the several species of one genus , Pyrgoma , these valves present a marvellous amount of diversification ; the homologous valves in the different species being sometimes wholly unlike in ...
... extremely little even in distinct genera ; but in the several species of one genus , Pyrgoma , these valves present a marvellous amount of diversification ; the homologous valves in the different species being sometimes wholly unlike in ...
453 ÆäÀÌÁö
... extremely different are at first exactly alike . How inexplicable are the cases of serial homologies on the ordinary view of creation ! Why should the brain be inclosed in a box composed of such numerous and such ex- traordinarily ...
... extremely different are at first exactly alike . How inexplicable are the cases of serial homologies on the ordinary view of creation ! Why should the brain be inclosed in a box composed of such numerous and such ex- traordinarily ...
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adapted admit affinities allied species America ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied color continued crossed crustaceans degree developed difficulty distinct species domestic doubt effects eggs embryo existing extinct extremely facts favorable females fertility flowers formation forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate intervals kind lamell©¡ larv©¡ less living male mammals manner marsupials migration modified descendants natural selection naturalists nearly nest oceanic islands offspring organs parent peculiar perfect pigeons pistil pollen present principle probably produced quadrupeds ranked remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive suppose tend theory tion trees variability variations varieties vary whole widely different wings young